Merge branch 'master' of https://github.com/libgdx/libgdx into various
Proper support for onAttachedToWindow and onDetachedFromWindow methods on Android 2.x
Added hashCode to Quaternion

Quaternion was only overriding `equals()`, but not `hashCode()`. The methods are generated with Eclipse and slightly changed to make them shorter and keep the same behaviour of the old `equals()`.
Added function to add an asset to the AssetManager
Added function to retrieve all the assets of a give type
Added flick feature to scrollpane.
Added fling gesture to scrollpane.
Added fling gesture to Scrollpane.
Update CHANGES
Merge pull request #1574 from karan1213/master

Added new method fling(...) in scrollpane.java
Merge pull request #1573 from karan1213/patch-1

Update CHANGES
Fix constructor to match core

Fixes #1577
Formatting
Add TextureRegion setter for UV range
removed unnecessary android backend classes
fixed issue #1563
Merge pull request #1580 from alex55i/uvrange

Add TextureRegion UV range setter to MeshBuilder.
Merge remote-tracking branch 'upstream/master'
Rename get to getAll AssetManager
Removed function to add an asset to the AssetManager
Update to meet commit e4d6a4e.
Ops... added missing import