panda3d-openvr 0.2.0

• New API now uses handlers instead of inheritance
• Hands animation using skeleton
• Hidden area mesh to allow early-z discard of invisible pixel, improving the fill rate
• Add application manifest and identification
• Allow an action to be restricted to a specific device
• Support color space configuration
• Complete code documentation
• Cleanup and document better the samples
• Include default action manifest from SteamVR