Various additions to changelog
Remove use of atomic around EventManager.save
Dont wrap save_aggregate in atomic transaction
target_user can be blank
Remove transaction use in plugin_is_regression
Remove print statement
Add Event.tags
Correct TransactionTestCase
Remove custom testcase code
Add transactional tests for integration and event manager
Minor tweaks to EventManager.save
Correct test
Correct invitation email context
Attach note about rule within notifications
Ensure regressions cant happen on muted events
Improve via box
Ensure tag keys are case insensitive
Ensure tests cover case insensitivity
Correct NotifyEventService action
Correct labels