Version 0.27-alpha

This release contains the following new features and bug fixes:

• Perspective projection for camera
• Mipmapped fonts
• Mouse position setter
• 3D rotation using quaternions and 3D scale for Nodes
• Implement third dimension for shake, move, rotate and scale animators
• ShapeDrawable can now draw polygons
• Fixed for Android mesh buffer rendering
• Refactored and easier to use Log class
• Fix for hidden node update and transform recalculation
• Removed OpenGL render target flip and implemented renderer transform matrix