Release Notes for 503

Made negative pathfinding area costs illegal. Improved handling non-negative pathfinding area costs.

Implemented the new Roblox VR system with the following components :

• 3rd person and 1st person comfort camera module with vehicle support
• new in-game menu and player gui interaction
• support for Oculus Touch and Valve Index controllers

Improve PluginManagement loading speed

Added instrumentation so that required assets can be surfaced on the Developer Console in Studio and Game Server. Renamed Model to required_asset_# where # is the asset id for required assets so that errors from required assets can be attributed properly in call stacks.

New Squash property to particles for non-uniform particle stretching, curve controlled for bouncy effects.

The correct Robux balance is shown in the success dialog after purchasing plugins.

Fixed a backtrace crash for AnchorVerb on data model closing

Improve performance of programs which make heavy use of nested unions.

Fix bug with Bones that lead to inaccurate TransformedWorldCFrame values.