Capilogs

=====
* awslogs now use ``boto3`` instead of ``boto2``.
* awslogs don't longer require ``gevent``.
* massive refactoring of the internals now that ``aws`` provides ``filter_log_events`` out the box.
* awslogs don't longer support retrieving logs from several groups at the same time.
* awslogs now support python: 2.7, 3.3 and 3.4

=====
* Filter streams by ``start`` and ``end`` in order to reduce the initial volume of queries 9.
* Fix next_token unbound after exception 8

=====
* Deal with AccessDeniedException properly 3.
* Return some helpful information if boto raises NoAuthHandlerFound 2.
* Make --aws-access-key-id, --aws-secret-access-key and --aws-region available to all parsers (groups, streams, get).
* Make it required to provide a valid region using --aws-region or AWS_REGION.
* Improve error messages by providing some hints.
* Add MANIFEST file 7.

=====
* Initial release