* Update dependencies
- Closes#270
* Unify controls in Invaders example
The fire button on gamepads was allowing trapid fire when holding the
button. Keyboard controls required the fire key to be released between
each shot fired. This commit fixes the difference by making the gamepad
fire button act like the keyboard fire key.
- Minor rewrite of the winit integration using the `game-loop` crate for
fixed time-step updates.
- Updates are now handled at 240 fps, regardless of frame rate.
- Frame rate is capped at 240 fps.
- Adds a pause key.
- Closes#11
* Move all examples to individual crates
* CI: Add libsdl2
* Use Ubuntu bionic for updated libsdl; 2.0.8
* Clippy
* libudev-dev is a dependency of libsdl2-dev
* Clippy
* Remove unnecessary dev-dependency
* `winit` is actually used in unit tests
* Fix a typo
* Move `simple-invaders` crate
