diff --git a/Cargo.lock b/Cargo.lock
index 7e5aa05..1fd6660 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,21 +1,8 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-[[package]]
-name = "addr2line"
-version = "0.13.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "gimli 0.22.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "adler"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "aho-corasick"
-version = "0.7.13"
+version = "0.7.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "memchr 2.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -36,19 +23,6 @@ name = "autocfg"
 version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "backtrace"
-version = "0.3.50"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "addr2line 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.76 (registry+https://github.com/rust-lang/crates.io-index)",
- "miniz_oxide 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "object 0.20.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-demangle 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "base64"
 version = "0.12.3"
@@ -71,7 +45,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "cc"
-version = "1.0.59"
+version = "1.0.61"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -81,13 +55,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "chrono"
-version = "0.4.15"
+version = "0.4.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
+ "libc 0.2.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-integer 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.115 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.117 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.44 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -104,7 +80,7 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "core-foundation-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.76 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.79 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -125,26 +101,6 @@ dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "failure"
-version = "0.1.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "backtrace 0.3.50 (registry+https://github.com/rust-lang/crates.io-index)",
- "failure_derive 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "failure_derive"
-version = "0.1.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "proc-macro2 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)",
- "synstructure 0.12.4 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "fnv"
 version = "1.0.7"
@@ -184,66 +140,66 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "futures"
-version = "0.3.5"
+version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "futures-channel 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-executor 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-io 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-sink 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-task 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-util 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-channel 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-executor 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-io 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-sink 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-task 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
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-version = "0.3.5"
+version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-sink 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-sink 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "futures-core"
-version = "0.3.5"
+version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "futures-executor"
-version = "0.3.5"
+version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-task 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-util 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-task 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "futures-io"
-version = "0.3.5"
+version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "futures-macro"
-version = "0.3.5"
+version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro-hack 0.5.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "proc-macro2 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "futures-sink"
-version = "0.3.5"
+version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "futures-task"
-version = "0.3.5"
+version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "once_cell 1.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -251,17 +207,17 @@ dependencies = [
 
 [[package]]
 name = "futures-util"
-version = "0.3.5"
+version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "futures-channel 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-io 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-macro 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-sink 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-task 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-channel 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-io 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-macro 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-sink 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-task 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "memchr 2.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "pin-project 0.4.23 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
  "pin-utils 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro-hack 0.5.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro-nested 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -270,19 +226,14 @@ dependencies = [
 
 [[package]]
 name = "getrandom"
-version = "0.1.14"
+version = "0.1.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.76 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasi 0.9.0+wasi-snapshot-preview1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "gimli"
-version = "0.22.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "h2"
 version = "0.2.6"
@@ -290,31 +241,28 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-sink 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-util 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-sink 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "http 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "indexmap 1.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "indexmap 1.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-util 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "tracing 0.1.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tracing 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "hashbrown"
-version = "0.8.2"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "autocfg 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
 
 [[package]]
 name = "hermit-abi"
-version = "0.1.15"
+version = "0.1.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.76 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.79 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -341,26 +289,31 @@ name = "httparse"
 version = "1.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "httpdate"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "hyper"
-version = "0.13.7"
+version = "0.13.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-channel 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-util 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-channel 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "h2 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "http 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "http-body 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "httparse 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "httpdate 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "itoa 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "pin-project 0.4.23 (registry+https://github.com/rust-lang/crates.io-index)",
- "socket2 0.3.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "time 0.1.44 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
+ "socket2 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-service 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "tracing 0.1.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tracing 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "want 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -370,7 +323,7 @@ version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "hyper 0.13.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hyper 0.13.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "native-tls 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-tls 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -378,10 +331,10 @@ dependencies = [
 
 [[package]]
 name = "ical"
-version = "0.6.0"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "failure 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "thiserror 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -396,11 +349,11 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "1.5.2"
+version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "autocfg 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "hashbrown 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hashbrown 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -408,7 +361,7 @@ name = "iovec"
 version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.76 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.79 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -423,10 +376,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "js-sys"
-version = "0.3.44"
+version = "0.3.45"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "wasm-bindgen 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -445,7 +398,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "libc"
-version = "0.2.76"
+version = "0.2.79"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -507,14 +460,6 @@ dependencies = [
  "unicase 2.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "miniz_oxide"
-version = "0.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "adler 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "mio"
 version = "0.6.22"
@@ -525,10 +470,10 @@ dependencies = [
  "fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.76 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "miow 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "net2 0.2.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "net2 0.2.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -550,7 +495,7 @@ version = "0.6.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.76 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.22 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -560,7 +505,7 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "net2 0.2.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "net2 0.2.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -570,7 +515,7 @@ name = "miow"
 version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "socket2 0.3.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "socket2 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -592,7 +537,7 @@ version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.76 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl 0.10.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -605,11 +550,11 @@ dependencies = [
 
 [[package]]
 name = "net2"
-version = "0.2.34"
+version = "0.2.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.76 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -635,15 +580,10 @@ name = "num_cpus"
 version = "1.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "hermit-abi 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.76 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hermit-abi 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.79 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "object"
-version = "0.20.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "once_cell"
 version = "1.4.1"
@@ -658,7 +598,7 @@ dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "foreign-types 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.76 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-sys 0.9.58 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -673,9 +613,9 @@ version = "0.9.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "autocfg 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "cc 1.0.59 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.76 (registry+https://github.com/rust-lang/crates.io-index)",
- "pkg-config 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.61 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.79 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "vcpkg 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -729,25 +669,25 @@ dependencies = [
 
 [[package]]
 name = "pin-project"
-version = "0.4.23"
+version = "0.4.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "pin-project-internal 0.4.23 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project-internal 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "pin-project-internal"
-version = "0.4.23"
+version = "0.4.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "pin-project-lite"
-version = "0.1.7"
+version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -757,7 +697,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "pkg-config"
-version = "0.3.18"
+version = "0.3.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -777,7 +717,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.19"
+version = "1.0.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "unicode-xid 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -788,7 +728,7 @@ name = "quote"
 version = "1.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -797,7 +737,7 @@ version = "0.6.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "autocfg 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.76 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_chacha 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_hc 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -814,8 +754,8 @@ name = "rand"
 version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "getrandom 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.76 (registry+https://github.com/rust-lang/crates.io-index)",
+ "getrandom 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_chacha 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_hc 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -857,7 +797,7 @@ name = "rand_core"
 version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "getrandom 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "getrandom 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -889,7 +829,7 @@ name = "rand_jitter"
 version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.76 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -901,7 +841,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.76 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -939,18 +879,18 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "regex"
-version = "1.3.9"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "aho-corasick 0.7.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "aho-corasick 0.7.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "memchr 2.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex-syntax 0.6.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex-syntax 0.6.20 (registry+https://github.com/rust-lang/crates.io-index)",
  "thread_local 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "regex-syntax"
-version = "0.6.18"
+version = "0.6.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -969,38 +909,33 @@ dependencies = [
  "base64 0.12.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "bytes 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "encoding_rs 0.8.24 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-util 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "http 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "http-body 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "hyper 0.13.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hyper 0.13.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper-tls 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipnet 2.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "js-sys 0.3.44 (registry+https://github.com/rust-lang/crates.io-index)",
+ "js-sys 0.3.45 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "mime 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "mime_guess 2.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "native-tls 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "percent-encoding 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "pin-project-lite 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.115 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.57 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project-lite 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.117 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_urlencoded 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-tls 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-futures 0.4.17 (registry+https://github.com/rust-lang/crates.io-index)",
- "web-sys 0.3.44 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-futures 0.4.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "web-sys 0.3.45 (registry+https://github.com/rust-lang/crates.io-index)",
  "winreg 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "rustc-demangle"
-version = "0.1.16"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "ryu"
 version = "1.0.5"
@@ -1023,7 +958,7 @@ dependencies = [
  "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "core-foundation 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "core-foundation-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.76 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "security-framework-sys 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1033,15 +968,15 @@ version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "core-foundation-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.76 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.79 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "serde"
-version = "1.0.115"
+version = "1.0.117"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde_derive 1.0.115 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.117 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1050,27 +985,27 @@ version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "ordered-float 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.115 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.117 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.115"
+version = "1.0.117"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "serde_json"
-version = "1.0.57"
+version = "1.0.59"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "itoa 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "ryu 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.115 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.117 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1080,7 +1015,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "dtoa 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "itoa 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.115 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.117 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1090,7 +1025,7 @@ version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "arc-swap 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.76 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.79 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1105,49 +1040,38 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "socket2"
-version = "0.3.12"
+version = "0.3.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.76 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.57 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "syn"
-version = "1.0.39"
+version = "1.0.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-xid 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "synstructure"
-version = "0.12.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "proc-macro2 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicode-xid 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "telegram-bot"
 version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "hyper 0.13.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hyper 0.13.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper-tls 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "multipart 0.16.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "telegram-bot-raw 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
- "tracing 0.1.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tracing 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "tracing-futures 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1157,28 +1081,28 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.115 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.117 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde-value 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.115 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.57 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.117 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.59 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "telegram_notes_bot"
 version = "0.1.0"
 dependencies = [
- "chrono 0.4.15 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-util 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "ical 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "chrono 0.4.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ical 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "mime 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "once_cell 1.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 1.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 1.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "reqwest 0.10.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.115 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.115 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.57 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.117 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.117 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "telegram-bot 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "thiserror 1.0.20 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -1198,20 +1122,20 @@ dependencies = [
 
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@@ -1227,7 +1151,7 @@ name = "time"
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-"checksum thiserror 1.0.20 (registry+https://github.com/rust-lang/crates.io-index)" = "7dfdd070ccd8ccb78f4ad66bf1982dc37f620ef696c6b5028fe2ed83dd3d0d08"
-"checksum thiserror-impl 1.0.20 (registry+https://github.com/rust-lang/crates.io-index)" = "bd80fc12f73063ac132ac92aceea36734f04a1d93c1240c6944e23a3b8841793"
+"checksum thiserror 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)" = "318234ffa22e0920fe9a40d7b8369b5f649d490980cf7aadcf1eb91594869b42"
+"checksum thiserror-impl 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)" = "cae2447b6282786c3493999f40a9be2a6ad20cb8bd268b0a0dbf5a065535c0ab"
 "checksum thread_local 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d40c6d1b69745a6ec6fb1ca717914848da4b44ae29d9b3080cbee91d72a69b14"
 "checksum time 0.1.44 (registry+https://github.com/rust-lang/crates.io-index)" = "6db9e6914ab8b1ae1c260a4ae7a49b6c5611b40328a735b21862567685e73255"
 "checksum tinyvec 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "238ce071d267c5710f9d31451efec16c5ee22de34df17cc05e56cbc92e967117"
@@ -1685,9 +1601,9 @@ dependencies = [
 "checksum tokio-tls 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9a70f4fcd7b3b24fb194f837560168208f669ca8cb70d0c4b862944452396343"
 "checksum tokio-util 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "be8242891f2b6cbef26a2d7e8605133c2c554cd35b3e4948ea892d6d68436499"
 "checksum tower-service 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e987b6bf443f4b5b3b6f38704195592cca41c5bb7aedd3c3693c7081f8289860"
-"checksum tracing 0.1.19 (registry+https://github.com/rust-lang/crates.io-index)" = "6d79ca061b032d6ce30c660fded31189ca0b9922bf483cd70759f13a2d86786c"
+"checksum tracing 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)" = "b0987850db3733619253fe60e17cb59b82d37c7e6c0236bb81e4d6b87c879f27"
 "checksum tracing-attributes 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)" = "80e0ccfc3378da0cce270c946b676a376943f5cd16aeba64568e7939806f4ada"
-"checksum tracing-core 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)" = "4f0e00789804e99b20f12bc7003ca416309d28a6f495d6af58d1e2c2842461b5"
+"checksum tracing-core 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)" = "f50de3927f93d202783f4513cda820ab47ef17f624b03c096e86ef00c67e6b5f"
 "checksum tracing-futures 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "ab7bb6f14721aa00656086e9335d363c5c8747bae02ebe32ea2c7dece5689b4c"
 "checksum try-lock 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "59547bce71d9c38b83d9c0e92b6066c4253371f15005def0c30d9657f50c7642"
 "checksum unicase 1.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7f4765f83163b74f957c797ad9253caf97f103fb064d3999aea9568d09fc8a33"
@@ -1702,13 +1618,13 @@ dependencies = [
 "checksum want 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1ce8a968cb1cd110d136ff8b819a556d6fb6d919363c61534f6860c7eb172ba0"
 "checksum wasi 0.10.0+wasi-snapshot-preview1 (registry+https://github.com/rust-lang/crates.io-index)" = "1a143597ca7c7793eff794def352d41792a93c481eb1042423ff7ff72ba2c31f"
 "checksum wasi 0.9.0+wasi-snapshot-preview1 (registry+https://github.com/rust-lang/crates.io-index)" = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
-"checksum wasm-bindgen 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)" = "f0563a9a4b071746dd5aedbc3a28c6fe9be4586fb3fbadb67c400d4f53c6b16c"
-"checksum wasm-bindgen-backend 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)" = "bc71e4c5efa60fb9e74160e89b93353bc24059999c0ae0fb03affc39770310b0"
-"checksum wasm-bindgen-futures 0.4.17 (registry+https://github.com/rust-lang/crates.io-index)" = "95f8d235a77f880bcef268d379810ea6c0af2eacfa90b1ad5af731776e0c4699"
-"checksum wasm-bindgen-macro 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)" = "97c57cefa5fa80e2ba15641578b44d36e7a64279bc5ed43c6dbaf329457a2ed2"
-"checksum wasm-bindgen-macro-support 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)" = "841a6d1c35c6f596ccea1f82504a192a60378f64b3bb0261904ad8f2f5657556"
-"checksum wasm-bindgen-shared 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)" = "93b162580e34310e5931c4b792560108b10fd14d64915d7fff8ff00180e70092"
-"checksum web-sys 0.3.44 (registry+https://github.com/rust-lang/crates.io-index)" = "dda38f4e5ca63eda02c059d243aa25b5f35ab98451e518c51612cd0f1bd19a47"
+"checksum wasm-bindgen 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)" = "1ac64ead5ea5f05873d7c12b545865ca2b8d28adfc50a49b84770a3a97265d42"
+"checksum wasm-bindgen-backend 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)" = "f22b422e2a757c35a73774860af8e112bff612ce6cb604224e8e47641a9e4f68"
+"checksum wasm-bindgen-futures 0.4.18 (registry+https://github.com/rust-lang/crates.io-index)" = "b7866cab0aa01de1edf8b5d7936938a7e397ee50ce24119aef3e1eaa3b6171da"
+"checksum wasm-bindgen-macro 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)" = "6b13312a745c08c469f0b292dd2fcd6411dba5f7160f593da6ef69b64e407038"
+"checksum wasm-bindgen-macro-support 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)" = "f249f06ef7ee334cc3b8ff031bfc11ec99d00f34d86da7498396dc1e3b1498fe"
+"checksum wasm-bindgen-shared 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)" = "1d649a3145108d7d3fbcde896a468d1bd636791823c9921135218ad89be08307"
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 "checksum winapi 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
 "checksum winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
diff --git a/Cargo.toml b/Cargo.toml
index 3efaa1d..628f155 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,7 +6,7 @@ license = "GPL-3.0+"
 edition = "2018"
 
 [dependencies]
-tokio = { version =  "0.2.0", features = ["full"] }
+tokio = { version =  "0.2.22", features = ["full"] }
 telegram-bot = "0.7.0"
 reqwest = { version = "0.10.4", features = ["json", "blocking"] }
 chrono = { version = "0.4.11", features = ["serde"] }
@@ -17,6 +17,6 @@ serde = "1.0.106"
 once_cell = "1.3.1"
 thiserror = "1.0.15"
 serde_json = "1.0.51"
-ical = "0.6.0"
+ical = "0.7.0"
 mime = "0.3.16"
 regex = "1.3.9"