NewsLeecher 7.0 Beta 5 changelog

NewsLeecher 7.0 Beta 5 brings the following changes:
#: This update contains major improvements to the group and queue
   cache system. To make these improvements possible, the cache
   file format had to be changed a bit. The upgrade to the new
   improved format is done automatically by NewsLeecher, but in
   case you want to downgrade to an earlier version of NewsLeecher
   later on, is it recommended that you make a backup of your
   NewsLeecher settings before installing.
+: Added a toggle to let Repair'n'Extract postpone RAR archive
   extraction while articles are queued for being downloaded.
   Settings -> Repair / Extract -> Postpone RAR Extracting ...
*: The download queue now consumes *much less* memory than before.
   This is especially noticable when the download queue contains
   lots of articles. We made a test with a large download queue, and
   saw memory usage go from 750MB to 55BM in this version.
*: Groups and queue cache cleanup code is now ~1000% faster than
   before. This is especially noticable when the download queue
   contains lots of articles.
*: The settings dialog is now resizable.
*: The "Destination Folder" setup dialog is now resizable.
*: Many smaller improvements ( Removed small interface freeze
   when scrolling through the settings dialog. Avg. RAR extract
   speed is now shown in log. The initial form size is now
   made larger than it was previsouly. Etc. )
!: Many smaller fixes and improvements to the new Repair & Extract
   PAR2 engine.
!: Fixed serious bug that, under certain conditions, caused parts
   of the download queue to corrupt, if the download paths for
   queued entries were manually changed.
!: Fixed bug where NewsLeecher sometimes didn't rename misnamed
   PAR2 set files, if the files were downloaded before the PAR2
   set was added to the "Repair and Extract" queue.
!: Fixed bug where the "filename" filter on the "Explorer" tab
   sometimes didn't work properly :
   http://www.newsleecher.com/forum/viewtopic.php?p=116981