E&S CVS Commit: Trellis - Added "pub/sub hub" to collections module, and updated Time service to

[pje at eby-sarna.com]

Author: pje
Date: Thu May 15 19:01:17 2008
New Revision: 2543

URL: http://svn.eby-sarna.com?rev=2543&view=rev
Log:
Added "pub/sub hub" to collections module, and updated Time service to
use the same underlying "cellcache" mechanism.  The cellcache mechanism 
itself is not yet a public API, however, due to minimal test coverage 
and some open questions regarding what cases it should support.  It does 
quite well for the things it's currently being used for, but don't 
depend on its API being stable just yet.

Modified:
    Trellis/Collections.txt
    Trellis/Internals.txt
    Trellis/peak/events/activity.py
    Trellis/peak/events/collections.py
    Trellis/peak/events/trellis.py
    Trellis/test_trellis.py