2.15.2

Identified issue causing packages to get malformed, no code changes
Added ability to auto expand media preview, configurable globally and overridable per source
Added ability to choose whether Enter key should open articles in foreground or background
Fixed issue preventing folders from being deleted
Fixed issues with content scrolling for articles with media elements
Attempt to prevent articles from reappearing for some feeds, it should be much less likely for them to comeback once you delete them