zipangu 0.3.0

New Features

• kana(): New function for create kana vector (#43).
• harmonize_prefecture_name(): New function for processing prefectural strings (#37).
  • Determine if the string is a prefecture string by is_prefecture().
• str_jnormalize: New function for pre-processing Japanese characters following the rules of 'neologd' (@paithiov909, #36).

Fix

• Fix the behaviors of jholiday_spec() when any NAs, NULL, and empty strings are supplied (@paithiov909, #38).
• is_jholiday() fails if the date argument contains NA (@hidekoji, #39).
• is_jholiday() returns incorrect result if lubridate.week.start option is set to other than Sunday (@hidekoji, #40).

Enhancement

• jholiday_spec() is now memoised internally. This change makes its second and later calls faster. Also, multiple values of name are now acceptable. (@paithiov909, #38).