v0.0.2b4: Merge pull request #39 from abyrne55/v0.0.2

Metric class changes:

• oldest_date_datetime changed input type, it can either be a datetime object or a timedelta object.

PrometheusConnect class changes:

• start_time and end_time parameters don't accept strings any more, they can only be datetime objects.
• similarly chunk_size parameter can only be a timedelta object

utils.py added

• These are some utility functions that are not needed for the core functionality of the library, but come in handy when parsing strings for datetimes or timedeltas.

Pre-release v0.0.2b3

Metric object has start_time and end_time now
Added a param parameter for metric get functions, these params are directly passed to the get request

Pre release for v0.0.2

Added Metric and MetricsList class to make metric data manipulation easier.

Initial Release

Merge pull request #3 from 4n4nd/dev

Add Sphinx Documentation configuration