First steps at Context tracking keys so that it can delete them.
More work towards purging identifiers from engines.
A bit of refactor.
More refactoring.
Changed key record to use key as key and target list as value.
More refactoring.
Cleaning up refactor.
Cleanup.
Removed some inadvertent whitespace changes.
Converting keys to remove to list.
Removed possibly problematic __del__.
Added some tests.
Merge branch 'master' into feature/purge-command
Added block=True argument to view clear.
Cosmetic tweak to key creation for comm_key.
Added purge_cluster command.
Added block=True param to view.clear call.
Minor change to comm key cleanup function.
Resolved merge conflicts.
Corrected import in standalone command.