2.0.0

2.0.0

• Updated from draft specification to official Extended Date/Time Format (EDTF) Specification released February 2019 (issue #22).
• Added conformsLevel* functionality (issue #24).
• Added '+/-' to fix a bug in zoneOffset to allow datetime ahead or behind UTC (issue #28).
• Fixed ValueError in is_valid_interval when invalid datetime patterns are given (issue #27).

1.1.1

• Fixed error on is_valid when checking an interval with a season.
• In README.md, updated draft EDTF specification link to fix the 404.

1.1.0

• Fixed an issue where some negative dates weren't validating under level 1 or level 2.
• Modified tests to use pytest, and more specifically, parametrization. Makes it easier to identify what specific
  input is the cause of any failed test.
• Added continuous integration.
• Improved support for dates with "u".
• Fixed an issue where level 0 dates validated as level 1 dates.
• Support Python versions through 3.7.