Release 3.1.0

Features:

• Update to version 27 of the Oculus Mobile SDK.
• Update to version 3.3 of the Godot Android library.
• Introduce the PoseRecentered signal (and java callback) to notify of pose recentering events.
• Add OvrSystem::get_driver_version() to access the version for the vrapi driver.
• Add support for updating the engine iterations frequency alongside the refresh rate.

Bug Fixes:

• Resolve issue causing the touch controllers' joyticks to have invalid axis input when resuming from hand tracking.

Breaking Changes:

• Change the axes used for the finger pinch strength. This was done to resolve the bug mentioned above. The new axes mappings are as follow:
  • Index finger pinch strength -> axis 4
  • Middle finger pinch strength -> axis 5
  • Ring finger pinch strength -> axis 8
  • Pinky finger pinch strength -> axis 9