GUI Improved: redesign preferences dialog, improve option layout
GUI Improved: new advanced option: User-agent sent to HTTP tracker
GUI Improved: new advanced option to adjust Anti-Leech rules
GUI Improved: new advanced option to config file path of video player
GUI Improved: improve connection number display in task list for HTTP/FTP task
GUI Improved: add left size column to task list (hidden by default)
GUI Improved: add context menu to BT task peer list header, to select columns to display
GUI Improved: BT task peer list support group display
GUI Improved: freeze BT task peer list when ScrollLock turned on
GUI Improved: HTTP task properties dialog will display free disk space of save location
GUI Improved: BitComet not responding dialog can be disabled
GUI Improved: BitComet don't hide already running emule plugin window when startup
GUI Improved: remove task category management
GUI Improved: remove history task list
GUI Improved: remove video file preview window, launch external video player instead
GUI Improved: remove BitComet resource browser from install package
GUI Bugfix: FireFox extension can download flv file from FireFox cache
Core Improved: remove NAT Traversal via UDP, to improve TCP transfer efficiency
Core Improved: improve TCP half-open patch for Windows XP SP3
Core Bugfix: after a file in BT task download finished, disconnect corresponding Long-Time Seeding connection immediately
Core Bugfix: the pieces containing file boundary data of BT task will be download repeatedly in some situation
Core Bugfix: BitComet does not save the BT tasks created by BC link when program exit
