Release info, make romaji2hiragana work as advertised.

lib/Lingua/JA/Moji.pm:
* Make "romaji2hiragana" operate correctly on macronned vowels.

lib/Lingua/JA/Moji/romaji2katakana.txt:
* Remove a bad entry

t/romaji2kana.t:
* Test for "romaji2hiragana" on macronned vowels.

Changes:
* Update to 0.33 prior to release.

build/moji-functions.txt:
* More Japanese documentation.