GUI Improved: new task piece graph for both BT and HTTP, displaying detail file piece downloading state
GUI Improved: enhanced video codec version detection for preview. the extra video codec check wizard is removed.
GUI Improved: add clipboard monitor, which can be enabled in floating window context menu
GUI Bugfix: fix the bug that fail to open torrent file during preview
GUI Bugfix: fix the bug that the UPNP opeartion results are not displayed in statistics view
GUI Bugfix: fix the bug that the floating window is not hide when hit boss key
Core Bugfix: fix the bug that the uplading rate is too low in some situation
Core Bugfix: fix the bug in the decode of GZIP data returned from HTTP server
