Add Client Async

Clients may now be added to columns asynchronously, meaning that if the column is being processed by another thread, the client will be sent the column once that processing is finished, but the calling thread will not block waiting for that to occur.
ColumnContainer Bugfix

Fixed a bug wherein it was possible for a ColumnContainer to spuriously unset its dirty flag during processing.
Add/Remove Client WorldContainer Documentation

Documented the add/remove client functions in the WorldContainer class.