add note to activity docs
better cassandra trim approach
fix cassandra trim test for agg feed, add docstrings
use utcnow for Activity.time
fix tests
fix cassandra timeline slicing bugs
fix another test
add basic apis to track fanouts and activity creations
no need to use pip --pre
add simple metric collection at manager level
travis dep caching for the win
add missing kwargs from notification feed
add import from string utility
purge wip about cassandra metrics (not-the-right-place)
more work on metrics
collect metrics with statsd instead of scales