ran gdx-tools HeaderFixer tool
Added a void circle builder (circleLine) to create a simple circle line without any triangle
Added ellipse builder
fixed vertices and indices ensuring
fix parameters on circle
Fix on radius
Adjust UVs differently to avoid FP rounding errors.

Some 1x1 pixel regions on a 1024x1024 atlas weren't rendering.
Merge branch 'origin/master'
Added Actor#sizeChanged. Widget/WidgetGroup call invalidate in it.
Merge pull request #806 from jrenner/run-header-tool

ran gdx-tools HeaderFixer tool
Add intersectRectangles to Intersector

Closes #823.
Override equals and hashCode on FileHandle

FileHandles having the same type and path should be considered equal.
Merge pull request #817 from VinceAngel/master

Added a void circle builder (circleLine) to create a simple circle line
Small changes to MeshBuilder
Merge pull request #827 from xoppa/3dapi

Small changes to MeshBuilder
Unused fields.
Javadoc
Merge branch 'origin/master'
Added HorizontalGroup, spacing.
Fixed alignment.