jMonkeyEngine 3.5.0-beta6

A non-production release for development and testing, which will hopefully lead to a "stable" release.

Noteworthy changes relative to 3.5.0-beta5:

• Bugs and defects addressed:

  • NullPointerException in AnimLayer.update() (PR #1730)
  • LwjglCanvas doesn't initialize OpenCL for LWJGL2 (PR #1720)
  • ineffective audio filters (issue #1699, PRs #1707 and #1728)
  • more serialization bugs in RenderState (issue #1723, PR #1726)

• General improvements:

  • javadoc (various PRs and commits)