An addon for Mandarin Chinese pinyin in the Anki Spaced Repetition System (http://ankisrs.net/)
Addon page at https://ankiweb.net/shared/info/2554990764
Documentation at http://batterseapower.github.io/pinyin-toolkit/
Google Discussion Group at http://is.gd/LK9v2g
List of issues at https://github.com/chatch/pinyin-toolkit/issues