refs #1566 構文木の追加
Merge branch 'akouryy_ja'
refs #1566 fix bug: add "->toHawaiian()"
Merge branch 'akouryy_hw'
Merge branch 'akouryy_ja'
Merge branch 'akouryy_ja'
refs #1560 fix syntax error
update LICENSE.md
Merge branch 'master' into akouryy_ja