Fix picking coordinates in 2D when map is rotated.
Add tests for picking and handling mouse input when 2D map is rotated.
Fix picking in 2D with rotated map.
Add tests for picking in 2D.
Update CHANGES.md.
Merge branch 'master' into pickCoordinates2D
Merge branch 'pickCoordinates2D' into picking

Conflicts:
	Source/Scene/Scene.js
	Specs/Scene/PickSpec.js
Replace getElementsByTagName with a case-insensitive regex to search for TileFormat
Merge branch 'master' into pickCoordinates2D
Merge branch 'pickCoordinates2D' into picking
Add regex search for TileSets as well
Handle casing differences in XML
Add test for casing differences
Update CHANGES.md
Small fix in CHANGES.md
Add support for multiple render targets.
Fix everything that uses a framebuffer with a color attachment.
Add Context tests.
Fix Framebuffer tests.
Add tests for multiple render targets.