Release v1.1.0

1.1.0 - 2021-11-24

• Support era_code + yymmdd format (e.g. H040323)
• Support japanese yyyy-mm-dd format (e.g. ``2019年11月12日`)

release v1.0.0

Merge pull request #8 from kitagawa-hr/v1.0.0

v1.0.0