Use IntMap to store pointer against pointer UUID. Fixes #2516
Label#setEllipse -> Label#setEllipsis.

closes #2529
correct color scaling in vertex shader
Merge pull request #2528 from Tom-Ski/gwt

Use IntMap to store pointer against pointer UUID. Fixes #2516
Merge pull request #2530 from vmilea/alpha

correct color scaling in vertex shader
Add null check in BitmapFont#toString()

BitmapFont loaded from FreeTypeFontGenerator does not have a fontFile set.

Fixes #2510
TextureAtlas - ETC1 compression, mask texture
compatibility - keep old atlas format when there is no mask
correct color scaling in vertex shader per #2530
handle GDX2D_FORMAT_LUMINANCE in native code