Added
- Arena randomization via the `randomizeArenas` parameter in YAML.
- More robust error-checking for arena ID's and cycling.
- Unit tests on `TrainingArena.cs` and `ArenaParameters.cs`.
- Visual elements for reinforcing cues (colors, short GIFs).
Changed
- Shortened end-of-episode notification to 2.5 seconds.
- Minor Unity script optimizations.
Fixed
- Resolved Spawner Tree Clock desync issue.
- Fixed Multiple Arenas cycling issue.
- Addressed Unity native warning in Training Arena script.
- Rectified the invisibility of the SignBoard prefab.
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