3.0.0 - Drop support for Python 2.7 and 3.4

This release drops support for Python 2.7 and 3.4.

v1.0.0

• Add support for day names
• Add support for dividers (1-59/2 for every minute)

v0.80.0

• Add anacron style has_been function (#1, #3)
• Add support for alternative datetime libraries (#4, #9)
• Make sure both timezone aware and naive datetimes are supported (#2, #3, #6)
• Drop support for Python 2.6, 3.2, 3.3 (#8)