* [API] Make the DecisionRequester public and add a delegate to its API to allow users to customize it's behavior.
- Rename Academy.AgentSetStatus to Academy.AgentPreStep and make it public.
- Fix Unity library cache issues for backwards compatibility tests.
- Collect standalone build and logs to artifacts for standalone build jobs.
- cat standalone build log if the build fails.
- Default verbose to False for standalone build test.
* disable backward compatibility test, bump communication version.
* still run training tests on latest.
* fix yml parse error.