Pre-release for limited testing.

• Updated the jolt-jni library to v0.9.5.
• Added the PlaneCollisionShape class.
• Made contact response optional for rigid bodies.
• Added another MeshCollisionShape constructor.
• Moved the PhysicsSystem from PhysicsSpace to CollisionSpace.
• Added package javadoc.
• Updated JMonkeyEngine to v3.8.0-alpha2.

Pre-release for limited testing.

• Deferred the creation of jolt-jni bodies until the PhysicsSystem is stepped.
• Added a cleaner thread for Jolt physics objects.
• Implemented kinematic bodies, CollisionShapeFactory, RigidBodyControl, collision margins, and custom debug materials.
• Added 3 collision shapes:
  • CompoundCollisionShape
  • HeightfieldCollisionShape
  • SimplexCollisionShape
• Implemented alternative orientations of capsule and cylinder shapes.
• Implemented debug visualization for bounding boxes.
• Replaced RigidBodySnapshot with BodyCreationSettings.
• Updated the jolt-jni library to v0.5.0, picking up support for Linux-on-ARM platforms.

This was another proof-of-concept pre-release.

• Switched from the jolt-java JVM bindings to jolt-jni. This expanded support
  to include MacOS and Windows platforms and eliminated the dependencies on
  JDK 19 preview features.
• Added 2 collision shapes: HullCollisionShape and MeshCollisionShape.
• Added BulletAppState accessors to configure debug visualization.
• Increased the maximum number of bodies in a PhysicsSpace to 15,000.
• Added PhysicsSpace configuration for broadphase optimization frequency.
• Did some preliminary performance tuning.

This is a proof-of-concept pre-release based on jolt-java v0.1.0

Features:

• static and dynamic rigid bodies with friction and restitution
• 4 collision shapes (box, Y-axis capsule, Y-axis cylinder, and sphere)
• BulletAppState and RigidBodyControl
• debug visualization
• PhysicsDumper and PhysicsDescriber
• mimics the APIs of Minie and jme3-jbullet

Known issues:

• requires Java 19 preview features
• only works on Linux
• getLinearVelocity() often returns a wrong value