cache the image in the particle to avoid errors in firefox when changing
the image during the particle lifetime
first prototype of the particle editor
Merge branch '1.0.0-dev' of https://github.com/melonjs/melonJS.git into particle-effect-editor
added emitter list to editor
added create and destroy emitter button to editor
added buttons to control the emitter state
added destroy method to particle emitter
updated example to dynamically create emitters as needed
added widget for resizing the emitter start area
some code cleanup
added widget for controlling wind and gravity
added new widgets for controlling start angle and speed
append input and add label in widget base
use me.video.onresize instead of directly resetting the cached input
offset
fixed angle not getting rendered correctly in some cases
moved some code
fixed widgets not floating correctly
wrap into closure
update the emitter list only when necessary
improved editor layout