Added new methods to the Drawable interface (makeCurrent, releaseContext, destroy).
Added a background thread texture loading test (using either Pbuffer or SharedDrawable).
Added support for OpenGL 3.0 context creation (MAJOR/MINOR versions, DEBUG mode, FORWARD_COMBATIBLE mode)
Added support for OpenGL 3.0 context sharing
Added support for OpenGL 3.0 extension detection
Improved support for floating point PixelFormats (ARB_color_buffer_float)
Added support for packed floating point PixelFormats (EXT_packed_float)
Added support for sRGB PixelFormats (ARB_framebuffer_sRGB)
Added support for pseudo-FORWARD_COMBATIBLE mode (deprecated functions not loaded)
Added support for EXT_direct_state_access