Version 4.0.0

- Update for ct.js v4

Version 3.0.0

- Add support for `ct.actions` API;
- Remove `ct.keyboard.pressed`, `ct.keyboard.released`, `ct.keyboard.down`, `ct.keyboard.e`;
- Add `ct.keyboard.lastCode`, `ct.keyboard.lastKey`.

Version 2.0.0

- Support new KeyboardAPI

Version 1.1.2

- refactoring.

Version 1.1.1

 - Moved some lines of code from ct core to injects.

Version 1.1.0

 - binding multiple keyboard events;
 - 'pressed', 'released' and 'down' are now arrays of keys being pressed, released etc.

Version 1.0.2

 - switching to addEventListener functions;
 - added 'space' key;
 - 'key' param fixed.

Version 1.0.1

 - store keyboard event in ct.

Version 1.0.0

 - first flight.
