mark format version as 0.8.0
fixes one step constraint in get_best_match
fixes poke the next constraint
fixes constraints array
add license
indent phrase_index.cpp
add const modifiers
fixes a typo
add mask out test cases to chewing/pharse table
add mask out test cases to ngram
add test cases for pinyin_mask_out
write pinyin_get_chewing/pinyin_string
add comments
write pinyin_token_*
add comments
remove pinyin_clear_constraint*
remove pinyin_translate_token
remove pinyin_get_pinyins_from_token
fixes pinyin_translate_token
a safe guard for chewing