Delta multiplier added to Editor Properties.
New emitters are configured as bare-boned skeletons.

Initial emitter remains the same however.
Add ScreenAdapter.java for GWT
Create ScreenAdapter.java
ParticleEmitter now resets the active particles too.
Added bounding box for particle effects.
Edited CHANGES file.
Adding multi-page fonts to BitmapFont; updating FreeTypeFontGenerator for packing multiple fonts together
Add DepthShader
Add basic shadow mapping
Add shadow mapping to the tests
more docs for Sprite.java
Moar javadocs.
Comments.
Fix getFileHandle for Internal files in RoboVM
Added add(T, float), remove(int), remove(T) and clear() methods to BinaryHeap.
Merge pull request #574 from hneuer/binaryheap

Added add(T, float), remove(int), remove(T) and clear() to BinaryHeap
Minor updates.
Merge branch 'origin/master'
remove private, fixed remove crash, better toString. #574