Beginning garbage collector for marked containers
mark and remove stale containers with exit or no status
force a container to be removed
Adjusted interval to MS, fixed indent, and filtering for stale containers
Better handling of marking stale containers
(WIP) event emit
GC should emit events
Updated libraries that remove containers
Made tests more sane by using wait_for_event
Merge pull request #39 from gregarndt/garbage_collection

Garbage collection