Several minor optimizations and features added
- Optimized EarClippingTriangulator.as: isInsideTriangle will only be called if the vertex in question is inside the bounding box of the triangle.
- Clearing the HardwareCharacterCache now also clears the vertex and index data and buffers of it's sections.
- Setting the text of a HardwareText object now clears the the child objects before parsing the new text.
- HardwareTextFormat now includes properties for shearing.
- shearing parameters can now be set within format tags.