更新日志
v2.4.1已付费版：
#8226;Using new Box V2 API. Please re-authenticate your Box accounts
#8226;New options for FoldERPair: retry on fail, 2G.
#8226;New general settings: pin code timeout, sync log retention count, free space threshold.
#8226;Revamped help section.
#8226;Sync type icon on folderpair list.
#8226;Experimental: Option to stream remote media files to player of your choice. VLC recommended for video.
etc.
