This release includes a number of fixes to the Matrix, Collaboration System, and other assets, with several fixes in the package system and other core areas.

Changelog:

 - fix: Calendar's ical link adds extraneous baloney
 - fixed: Wiki page history shows username instead of alias
 - added: Uploads locations and files are set to the same uid/gid that owns the uploads root
 - fixed: SQL Form fields with a regex are required even if not set to required
 - fixed: Matrix caches pages, and may not update for new listings
 - fixed: Editting matrix listings shows fields from other matrix assets
 - fixed: Matrix assets show pending listings from all matrix assets on a site
 - fixed: Changing name of Matrix listing leaves discussion forum with old name
 - fixed: Importing a package can break when updating a pending asset
 - fixed: errors on package importing are always reported as corrupted packages
 - fixed: Optional pubDate RSS field generates warnings when missing
 - fixed: Collaboration System threads can return other object types when asked for replies
 - fixed: Able to cut or trash system assets
 - fixed: Can't purge uncommitted assets if not using its version tag
 - fixed: DataForm will create fields with duplicate names but doesn't use them separately
 - fixed: Bad message if database link for SQL Report doesn't exist
 - fixed: Collaboration System errors when missing RSS From Parent
 - fixed: Turning off RSS on Collaboration System doesn't remove RSS From Parent asset