update to unicode 7.0.0
deprecate bsdconv_codecs_list() by bsdconv_modules_list(), old symbol will be remained until next major release
deprecate bsdconv_codec_check() by bsdconv_module_check(), old symbol will be remained until next major release
add filter/{CYRILLIC,HANGUL,HIRAGANA,KATAKANA,KHMER,LATIN1,MAHJONG,PRINT,ROMAN,THAI}
replace inter/ZH-STRINGS with inter/STRINGS which accepts filter
add scorer infrastructure
add scorer/{CJK,LATIN1}
add output mode BSDCONV_PASS
add zsh auto completion script