Added default return values for conversion functions to ensure a value is returned and silence VS warning C4715
Updated wxD2DBrushData dtor to release grandient brush information pointers
Updated wxD2DBrushData interface with explicit methods for creating a solid color brush or a bitmap brush. Partially implemented every creation method to set the m_brushType data member. Implemented wxD2DBrushData::GetBrush()
Added IsAcquired(T*) method for testing if a direct2d resource was previously acquired
Added wxD2DBRUSHTYPE_UNSPECIFIED to indicate a not-yet constructed wxD2DBrushData
Added implementation for solid color wxD2DBrushData objects