diff --git a/Readme.md b/Readme.md
index 0c1ff4e..da33ecf 100644
--- a/Readme.md
+++ b/Readme.md
@@ -30,8 +30,6 @@ cursive = { git = "https://github.com/gyscos/Cursive" }
 ([You will also need ncurses installed.](https://github.com/gyscos/Cursive/wiki/Install-ncurses))
 
 ```rust,no_run
-extern crate cursive;
-
 use cursive::Cursive;
 use cursive::views::{Dialog, TextView};
 
diff --git a/doc/tutorial_1.md b/doc/tutorial_1.md
index 0d8c5ca..94b5699 100644
--- a/doc/tutorial_1.md
+++ b/doc/tutorial_1.md
@@ -6,8 +6,6 @@ In this first tutorial, we'll learn the basics of cursive,
 and write a very basic first application:
 
 ```rust,no_run
-extern crate cursive;
-
 use cursive::Cursive;
 use cursive::views::TextView;
 
@@ -51,8 +49,6 @@ cursive = "*"
 Finally, update `src/main.rs` to import it:
 
 ```rust,no_run
-extern crate cursive;
-
 fn main() {
 }
 ```
@@ -75,8 +71,6 @@ so let's skip it for now.
 In its simplest form, a cursive application is therefore:
 
 ```rust,no_run
-extern crate cursive;
-
 use cursive::Cursive;
 
 fn main() {
@@ -112,8 +106,6 @@ This method takes 2 arguments: a trigger, and a callback.
 In the end, we have:
 
 ```rust,no_run
-extern crate cursive;
-
 use cursive::Cursive;
 
 fn main() {
@@ -153,8 +145,6 @@ exactly that.
 Once we've added this line, our first application is complete:
 
 ```rust,no_run
-extern crate cursive;
-
 use cursive::Cursive;
 use cursive::views::TextView;
 
diff --git a/doc/tutorial_2.md b/doc/tutorial_2.md
index cd4b731..ae26893 100644
--- a/doc/tutorial_2.md
+++ b/doc/tutorial_2.md
@@ -6,8 +6,6 @@ This time, we'll work on a slightly bigger example, where the user will need to
 actually make some choices. Here is what the code will look like:
 
 ```rust,no_run
-extern crate cursive;
-
 use cursive::Cursive;
 use cursive::views::Dialog;
 
@@ -46,8 +44,6 @@ This time you're not a beginner anymore, so we'll skip the introduction!
 Let's start from a basic cursive application:
 
 ```rust,no_run
-extern crate cursive;
-
 use cursive::Cursive;
 
 fn main() {
@@ -67,8 +63,6 @@ and/or buttons.
 `TextView`:
 
 ```rust,no_run
-extern crate cursive;
-
 use cursive::Cursive;
 use cursive::views::Dialog;
 use cursive::views::TextView;
@@ -129,8 +123,6 @@ packing everything into the closure, let's use a separate function for the
 callback. Here is the current state:
 
 ```rust,no_run
-extern crate cursive;
-
 use cursive::Cursive;
 use cursive::views::Dialog;
 
diff --git a/doc/tutorial_3.md b/doc/tutorial_3.md
index 0a0213f..0126787 100644
--- a/doc/tutorial_3.md
+++ b/doc/tutorial_3.md
@@ -9,8 +9,6 @@ them to update them.
 Here is the code we'll end up with:
 
 ```rust,no_run
-extern crate cursive;
-
 use cursive::Cursive;
 use cursive::views::{Button, Dialog, DummyView, EditView,
                      LinearLayout, SelectView};
diff --git a/examples/colors.rs b/examples/colors.rs
index d1e0e00..a385f38 100644
--- a/examples/colors.rs
+++ b/examples/colors.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::theme::{Color, ColorStyle};
 use cursive::view::Boxable;
 use cursive::views::Canvas;
diff --git a/examples/debug_console.rs b/examples/debug_console.rs
index 9f1fdcf..1ff9eae 100644
--- a/examples/debug_console.rs
+++ b/examples/debug_console.rs
@@ -1,24 +1,19 @@
-extern crate cursive;
-
-#[macro_use]
-extern crate log;
-
 fn main() {
     // Initialize the cursive logger.
     cursive::logger::init();
 
     // Use some logging macros from the `log` crate.
-    error!("Something serious probably happened!");
-    warn!("Or did it?");
-    debug!("Logger initialized.");
-    info!("Starting!");
+    log::error!("Something serious probably happened!");
+    log::warn!("Or did it?");
+    log::debug!("Logger initialized.");
+    log::info!("Starting!");
 
     let mut siv = cursive::Cursive::default();
     siv.add_layer(cursive::views::Dialog::text("Press ~ to open the console.\nPress l to generate logs.\nPress q to quit."));
     siv.add_global_callback('q', cursive::Cursive::quit);
     siv.add_global_callback('~', cursive::Cursive::toggle_debug_console);
 
-    siv.add_global_callback('l', |_| trace!("Wooo"));
+    siv.add_global_callback('l', |_| log::trace!("Wooo"));
 
     siv.run();
 }
diff --git a/examples/dialog.rs b/examples/dialog.rs
index f09386e..4255112 100644
--- a/examples/dialog.rs
+++ b/examples/dialog.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::views::{CircularFocus, Dialog, TextView};
 use cursive::Cursive;
 
diff --git a/examples/edit.rs b/examples/edit.rs
index 3f5c8b8..e7429c9 100644
--- a/examples/edit.rs
+++ b/examples/edit.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::traits::*;
 use cursive::views::{Dialog, EditView, TextView};
 use cursive::Cursive;
diff --git a/examples/hello_world.rs b/examples/hello_world.rs
index e0ba7c6..0ec8a08 100644
--- a/examples/hello_world.rs
+++ b/examples/hello_world.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::views::TextView;
 use cursive::Cursive;
 
diff --git a/examples/key_codes.rs b/examples/key_codes.rs
index eb4e089..9d876c2 100644
--- a/examples/key_codes.rs
+++ b/examples/key_codes.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::event::{Event, EventResult};
 use cursive::traits::*;
 use cursive::{Cursive, Printer};
@@ -24,7 +22,7 @@ impl KeyCodeView {
     fn new(size: usize) -> Self {
         KeyCodeView {
             history: Vec::new(),
-            size: size,
+            size,
         }
     }
 }
diff --git a/examples/linear.rs b/examples/linear.rs
index 5929501..7e61713 100644
--- a/examples/linear.rs
+++ b/examples/linear.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::align::HAlign;
 use cursive::traits::*;
 use cursive::views::{Dialog, DummyView, LinearLayout, TextView};
diff --git a/examples/list_view.rs b/examples/list_view.rs
index 8780aa2..2fc6fb4 100644
--- a/examples/list_view.rs
+++ b/examples/list_view.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::traits::*;
 use cursive::views::{
     Checkbox, Dialog, EditView, LinearLayout, ListView, SelectView, TextView,
diff --git a/examples/logs.rs b/examples/logs.rs
index c710b0c..88f5337 100644
--- a/examples/logs.rs
+++ b/examples/logs.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::traits::*;
 use cursive::vec::Vec2;
 use cursive::{Cursive, Printer};
@@ -65,10 +63,7 @@ impl BufferView {
     fn new(size: usize, rx: mpsc::Receiver<String>) -> Self {
         let mut buffer = VecDeque::new();
         buffer.resize(size, String::new());
-        BufferView {
-            rx: rx,
-            buffer: buffer,
-        }
+        BufferView { rx, buffer }
     }
 
     // Reads available data from the stream into the buffer
diff --git a/examples/lorem.rs b/examples/lorem.rs
index dd4b4fc..5e38959 100644
--- a/examples/lorem.rs
+++ b/examples/lorem.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::align::HAlign;
 use cursive::view::Scrollable;
 use cursive::views::{Dialog, Panel, TextView};
diff --git a/examples/markup.rs b/examples/markup.rs
index 4ea2e61..b3544bd 100644
--- a/examples/markup.rs
+++ b/examples/markup.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::theme::BaseColor;
 use cursive::theme::Color;
 use cursive::theme::Effect;
diff --git a/examples/menubar.rs b/examples/menubar.rs
index da38cfd..621c168 100644
--- a/examples/menubar.rs
+++ b/examples/menubar.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::event::Key;
 use cursive::menu::MenuTree;
 use cursive::traits::*;
diff --git a/examples/mines/main.rs b/examples/mines/main.rs
index 4cf4235..0da4435 100644
--- a/examples/mines/main.rs
+++ b/examples/mines/main.rs
@@ -1,6 +1,3 @@
-extern crate cursive;
-extern crate rand;
-
 mod game;
 
 use cursive::direction::Direction;
@@ -148,7 +145,7 @@ impl BoardView {
                 }
             }
         }
-        return EventResult::Consumed(None);
+        EventResult::Consumed(None)
     }
 
     fn auto_reveal(&mut self, pos: Vec2) -> EventResult {
diff --git a/examples/mutation.rs b/examples/mutation.rs
index 32cf39b..2947cf9 100644
--- a/examples/mutation.rs
+++ b/examples/mutation.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::traits::*;
 use cursive::view::{Offset, Position};
 use cursive::views::{Dialog, OnEventView, TextView};
diff --git a/examples/position.rs b/examples/position.rs
index 1219146..1703a88 100644
--- a/examples/position.rs
+++ b/examples/position.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::view::Position;
 use cursive::views::LayerPosition;
 use cursive::views::TextView;
diff --git a/examples/progress.rs b/examples/progress.rs
index 9a93898..b6a5b3f 100644
--- a/examples/progress.rs
+++ b/examples/progress.rs
@@ -1,6 +1,3 @@
-extern crate cursive;
-extern crate rand;
-
 use cursive::traits::*;
 use cursive::utils::Counter;
 use cursive::views::{Button, Dialog, LinearLayout, ProgressBar, TextView};
diff --git a/examples/radio.rs b/examples/radio.rs
index 5435900..ab6c268 100644
--- a/examples/radio.rs
+++ b/examples/radio.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::views::{Dialog, DummyView, LinearLayout, RadioGroup};
 use cursive::Cursive;
 
diff --git a/examples/refcell_view.rs b/examples/refcell_view.rs
index 827e781..a2abf16 100644
--- a/examples/refcell_view.rs
+++ b/examples/refcell_view.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::view::{Boxable, Identifiable};
 use cursive::views::{Dialog, EditView, LinearLayout, TextView};
 use cursive::Cursive;
diff --git a/examples/scroll.rs b/examples/scroll.rs
index 4a2c5a5..037aca8 100644
--- a/examples/scroll.rs
+++ b/examples/scroll.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::traits::Boxable;
 use cursive::view::Scrollable;
 use cursive::views::{Button, Canvas, Dialog, LinearLayout};
diff --git a/examples/select.rs b/examples/select.rs
index 3090cec..521aaf4 100644
--- a/examples/select.rs
+++ b/examples/select.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::align::HAlign;
 use cursive::event::EventResult;
 use cursive::traits::*;
diff --git a/examples/slider.rs b/examples/slider.rs
index 1ad4f4f..70b5978 100644
--- a/examples/slider.rs
+++ b/examples/slider.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::traits::*;
 use cursive::views::{Dialog, SliderView};
 use cursive::Cursive;
diff --git a/examples/terminal_default.rs b/examples/terminal_default.rs
index eb96433..00de7fb 100644
--- a/examples/terminal_default.rs
+++ b/examples/terminal_default.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::theme::{Color, PaletteColor, Theme};
 use cursive::views::TextView;
 use cursive::Cursive;
diff --git a/examples/text_area.rs b/examples/text_area.rs
index ea162c2..34bf739 100644
--- a/examples/text_area.rs
+++ b/examples/text_area.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::event::{Event, Key};
 use cursive::traits::*;
 use cursive::views::{Dialog, EditView, OnEventView, TextArea};
diff --git a/examples/theme.rs b/examples/theme.rs
index 2793b3c..30d3506 100644
--- a/examples/theme.rs
+++ b/examples/theme.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::views::{Dialog, TextView};
 use cursive::Cursive;
 
diff --git a/examples/theme_manual.rs b/examples/theme_manual.rs
index 80e99a1..7dbb6b8 100644
--- a/examples/theme_manual.rs
+++ b/examples/theme_manual.rs
@@ -1,5 +1,3 @@
-extern crate cursive;
-
 use cursive::theme::{BaseColor, BorderStyle, Color, ColorStyle};
 use cursive::views::{Dialog, EditView, LinearLayout, TextView};
 use cursive::Cursive;
diff --git a/examples/vpv.rs b/examples/vpv.rs
index 7c6d521..7f63bbb 100644
--- a/examples/vpv.rs
+++ b/examples/vpv.rs
@@ -47,7 +47,8 @@ fn main() {
                                 let duration = now - start;
 
                                 let seconds = duration.as_secs() as f64
-                                    + duration.subsec_nanos() as f64 * 1e-9;
+                                    + f64::from(duration.subsec_nanos())
+                                        * 1e-9;
 
                                 let speed = ticks / seconds;
 
diff --git a/src/cursive.rs b/src/cursive.rs
index c71d8a2..d9380f5 100644
--- a/src/cursive.rs
+++ b/src/cursive.rs
@@ -325,7 +325,6 @@ impl Cursive {
     /// # Examples
     ///
     /// ```rust
-    /// # extern crate cursive;
     /// # use cursive::*;
     /// # fn main() {
     /// let mut siv = Cursive::dummy();
@@ -358,8 +357,6 @@ impl Cursive {
     /// # Examples
     ///
     /// ```rust
-    /// # extern crate cursive;
-    /// #
     /// # use cursive::{Cursive, event};
     /// # use cursive::views::{Dialog};
     /// # use cursive::traits::*;
@@ -512,7 +509,6 @@ impl Cursive {
     /// # Examples
     ///
     /// ```rust
-    /// # extern crate cursive;
     /// # use cursive::{Cursive, views, view};
     /// # use cursive::traits::*;
     /// # fn main() {
@@ -550,7 +546,6 @@ impl Cursive {
     /// # Examples
     ///
     /// ```rust
-    /// # extern crate cursive;
     /// # use cursive::{Cursive, views};
     /// # use cursive::traits::*;
     /// # fn main() {
@@ -645,7 +640,6 @@ impl Cursive {
     /// # Examples
     ///
     /// ```rust
-    /// # extern crate cursive;
     /// # use cursive::*;
     /// # fn main() {
     /// let mut siv = Cursive::dummy();
@@ -668,7 +662,6 @@ impl Cursive {
     /// # Examples
     ///
     /// ```rust
-    /// # extern crate cursive;
     /// # use cursive::*;
     /// # fn main() {
     /// let mut siv = Cursive::dummy();
@@ -690,7 +683,6 @@ impl Cursive {
     /// # Examples
     ///
     /// ```rust
-    /// # extern crate cursive;
     /// # use cursive::*;
     /// # fn main() {
     /// let mut siv = Cursive::dummy();
diff --git a/src/lib.rs b/src/lib.rs
index be0e0b5..45f5eaa 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -33,8 +33,6 @@
 //! ## Examples
 //!
 //! ```rust
-//! extern crate cursive;
-//!
 //! use cursive::Cursive;
 //! use cursive::views::TextView;
 //!
diff --git a/src/utils/immutify.rs b/src/utils/immutify.rs
index 72903ad..a93dbe1 100644
--- a/src/utils/immutify.rs
+++ b/src/utils/immutify.rs
@@ -52,9 +52,7 @@ pub fn immutify<F: FnMut(&mut Cursive)>(
 /// # Examples
 ///
 /// ```rust
-/// # #[macro_use]
-/// # extern crate cursive;
-/// # use cursive::Cursive;
+/// # use cursive::{Cursive, immut1};
 /// # fn main() {
 /// # let mut siv = Cursive::dummy();
 /// let mut i = 0;
diff --git a/src/utils/lines/simple/mod.rs b/src/utils/lines/simple/mod.rs
index 32eb7e1..7e3ed06 100644
--- a/src/utils/lines/simple/mod.rs
+++ b/src/utils/lines/simple/mod.rs
@@ -39,8 +39,6 @@ pub fn make_lines(content: &str, width: usize) -> Vec<Row> {
 /// Example:
 ///
 /// ```
-/// # extern crate cursive;
-/// extern crate unicode_segmentation;
 /// use unicode_segmentation::UnicodeSegmentation;
 ///
 /// # use cursive::utils::lines::simple::prefix;
diff --git a/src/view/view_wrapper.rs b/src/view/view_wrapper.rs
index 898389e..cd02340 100644
--- a/src/view/view_wrapper.rs
+++ b/src/view/view_wrapper.rs
@@ -154,14 +154,13 @@ impl<T: ViewWrapper> View for T {
 /// # Examples
 ///
 /// ```rust
-/// # #[macro_use] extern crate cursive;
 /// # use cursive::view::{View,ViewWrapper};
 /// struct FooView<T: View> {
 ///     view: T,
 /// }
 ///
 /// impl <T: View> ViewWrapper for FooView<T> {
-///     wrap_impl!(self.view: T);
+///     cursive::wrap_impl!(self.view: T);
 /// }
 /// # fn main() { }
 /// ```
@@ -199,18 +198,17 @@ macro_rules! wrap_impl {
 /// # Examples
 ///
 /// ```rust
-/// # #[macro_use] extern crate cursive;
-/// # use cursive::view::{View,ViewWrapper};
+/// # use cursive::view::{View, ViewWrapper};
 /// struct FooView<T: View> {
 ///     view: T,
 /// }
 ///
 /// impl<T: View> FooView<T> {
-///     inner_getters!(self.view: T);
+///     cursive::inner_getters!(self.view: T);
 /// }
 ///
 /// impl <T: View> ViewWrapper for FooView<T> {
-///     wrap_impl!(self.view: T);
+///     cursive::wrap_impl!(self.view: T);
 /// }
 /// # fn main() { }
 /// ```
diff --git a/src/views/edit_view.rs b/src/views/edit_view.rs
index 4880128..6726754 100644
--- a/src/views/edit_view.rs
+++ b/src/views/edit_view.rs
@@ -31,7 +31,6 @@ pub type OnSubmit = dyn Fn(&mut Cursive, &str);
 /// [1]: https://github.com/gyscos/Cursive/blob/master/examples/edit.rs
 ///
 /// ```rust
-/// # extern crate cursive;
 /// # use cursive::Cursive;
 /// # use cursive::traits::*;
 /// # use cursive::views::{Dialog, EditView, TextView};
diff --git a/src/views/select_view.rs b/src/views/select_view.rs
index b8fdc15..254976b 100644
--- a/src/views/select_view.rs
+++ b/src/views/select_view.rs
@@ -25,7 +25,6 @@ use std::rc::Rc;
 /// # Examples
 ///
 /// ```rust
-/// # extern crate cursive;
 /// # use cursive::Cursive;
 /// # use cursive::views::{SelectView, Dialog, TextView};
 /// # use cursive::align::HAlign;