Merge branch '0.5.2_intial_state_actionrun_bug' of github.com:dnephin/Tron into release_0.5.2
Merge branch '0.5.2_state_migration_tools' of github.com:dnephin/Tron into release_0.5.2
Merge branch 'r0.5.2_config_hash_verify' of github.com:dnephin/Tron into release_0.5.2
Bump version to 0.5.2.1 and add release notes.
Merge branch 'release_0.5.2' of github.com:Yelp/Tron into release_0.5.2
Add missing template to manifest and missing patch to migration script.
Update docs and build.
Merge branch 'release_0.5.2' of github.com:Yelp/Tron into r0.6_service_refactor
Bump version.