v1.8.0

Added new ButtonCombos, to mimic Phaser's KeyCombos with gamepad buttons.
Added timers to button presses, we're now able to retrieve a pressed, released, and duration value.
Added extra helper functions to the player object, including isDown and checkDown to mimic Phaser's keyboard handling with merged input.
Player helper objects are now able to be called directly on the player object and will accept either mapped or unmapped button actions.