initial work to support metrics at hour/minute/second granularities; Also storing UTC
Support for hourly granularity - need some testing
resolving conflicts, completeing merge #24
only accept datetime objects for the _build_keys method
updating tests for new granularity
be sure to keep up with and increment new granularity keys in the metric method
update the get_metric and get_metrics methods so they know about new granularities
updating tests
updated history and roadmap
bug fix for categories stored in sets; minor pep8 changes
update tests for R.reset_category
updated template filter docs and tests
adding seconds, minutes, hourly metrics to templates
updating docstrings
updating HISTORY and roadmap
minor updates
utils._dates should return datetime objects using utc time instead of just date objects
refactor how _date_rage produces values
make sure always have a sensible start date
fixing tests