* down and parse cedict
* remove useless
* using third party python pinyin
* jieba as default wordseg
* remove useless
* remove pinyin dict
* using jieba.lcut
* remove doc of cedict egs
* add fan2jian test
* add description for say_digit
* add an example to convert transcription to pinyin with pypinyin and jieba
* format code
* 1. remove script for data downloading, since Baker dataset is not easily downloaded via terminal;
2. remove pypinyin as an extra requirement; it is alreay required by the main project;
3. clean code.
* change output format
* more decoding method
* all decode method test scripts; result readme
* exp libri confi
* parallel data scripts; more mask test; need pybind11 repo
* speed perturb config
* libri conf test set
* default cmvn compute config; more log of grad clip; diff ds2 cmvn compute and conf; ds2 lr step by epoch;
* fix ds2 config
* fix install and egs link
* sox speed pertrub shape (T, C), float64, process using int32
* fix libri ds2 scripts; add ngram and spm doc
* aishell ds2 cer7.86
* fix ds2 result
Hui Zhang
Haoxin Ma
chenfeiyu