Added
- Two demos to demonstrate basic usage
- A changelog file
- A `setup.cfg` and a `setup.py`
Changed
- The start and end dates of Era instances are now `datetime.datetime`
rather than `datetime.date` for consistency
- A Wareki instance with no arguments given when created, defaults
to the current time (i.e. `datetime.now()`
- `str()` of a Wareki instance now provides a long date using the
Japanese calendar rather than just the string representation of a
normal datetime object