version 1.8.91
* use libpinyin 1.9.91

version 1.8.1
* change dconf key name to lower case

version 1.8.0
* use libpinyin 1.6.0
* fixes setup dialog

version 1.7.91
* use libpinyin 1.5.91
* allow to remove the user phrase
* enable lua script extension in double pinyin

version 1.7.0
* python 3.x migration
* use opencc 1.0
* remember every user input as new phrase
* customize shortcut keys
* support to export user phrases