-New SpriteFrames editor, with support for drag&drop, multiple animation
sets, animation speed and loop.
-New AnimatedSprite, with support for all the new features!
AnimatedSprite3D has not been updated yet.
-Added support for drag&drop to other editors, such as resourcepreload,
sample library, etc.
-WorldEnvironment cleanup issues fixed (#563)
-Text Editor improvement to shift-mouse selection (#648)
-(Hopefully) fixed rare (but horrible) indexing bug in GDScript compiler (#652)
-Some changes to PhysicsBody API, renamed property "active" to "sleeping", which makes more sense
-Added add_collision_exception() API in PhysicsBody (more accessible)
-ability to select and copy in the output messages panel
-fix some menus
-fixed bug in out transition curves
-detect and remove file:/// in collada
-remove multiscript for now
-remove dependencies on mouse in OS, moved to Input
-avoid fscache from screwing up (fix might make it slower, but it works)
-funcref was missing, it's there now