FlxAngle: Added angleFromFacing. FlxVelocity: DRY
Added a speed property to FlxEmitter
It will be used when the emitter mode is set to CIRCLE
Removed velocity by mistake, bring it back
Added default speed.
FlxAngle#angleFromfacing: Added diagonal cases
Haxe is too stupid...
(you cannot switch on expressions, even with inlined vars)
Should be OR, not AND
Use pattern guards
Added resetVelocity
Merge pull request #1194 from mrcdk/speed_for_emitters

Added a speed property to FlxEmitter
Added keepScaleRatio to the FlxEmitter.
Merge pull request #1198 from mrcdk/keepScaleRatio_particles

Added keepScaleRatio to the FlxEmitter.
Merge pull request #1195 from steverichey/dev

Correct Android button input errors
Merge pull request #1193 from kevinresol/dev

FlxAngle: Added angleFromFacing. FlxVelocity: DRY
Update CHANGELOG.md
make FlxSound loop public property