https://github.com/fguillot/kanboard
PHP之依赖注入容器pimple
https://github.com/silexphp/Pimple
SplObjectStorage类
SimpleLogger
Syslog and Text files
https://github.com/fguillot/simpleLogger
SimpleValidator
https://github.com/fguillot/SimpleValidator
iCal iCalendars
https://github.com/markuspoerschke/iCal
Base32
https://github.com/NTICompass/PHP-Base32