rand() -> mt_rand()

https://www.google.co.jp/search?q=php+rand+mt_rand
Refactor - $plugin->_getAllOptions()
Refactor - $plugin->_initCacheInfo()
Rename - $manager->_initCacheInfo()

$manager->_initPluginCacheInfo()
atom.phpをextraディレクトリに移動
rsd.phpをextraフォルダに移動
config.php.sampleをextraフォルダに移動
readme.htmlをextraフォルダに移動
New - $manager->initSqlCacheInfo()

New - $manager->initSqlCacheInfo('sql_num_rows')
New - $manager->initSqlCacheInfo()

New - $manager->initSqlCacheInfo('sql_fetch_object')