Groups.io: Changelog

CHANGE: Made our Message-ID header line parsing code smarter, to deal with a crazy message-id of the form "<salkdjjks@alksjdklas> (extra unexpected stuff here)"
CHANGE: Now removing any erroneous nulls from decoded message subject lines.
CHANGE: When exporting Yahoo Groups, scan messages for U+FFFD characters and remove them.
INTERNAL: Work on automated provisioning/configuration of new machines.
SYSADMIN: Created a new, larger search cluster, and reindexed the site.
BUGFIX: Added missing 'Reply To Group & Sender' option in full digests.
BUGFIX: When aliasing a hashtag to another tag, existing topics were not being properly updated in the search index. So searches on the aliased-to tag would not show the aliased-from topics. This was due to two issues in how we were updating the search index.

INTERNAL: Tested database backups.
INTERNAL: Changed the internals of the database APIs to better deal with the new connection pooling system.
CHANGE: Tweaked the wording of 'Default Post Policy' and 'Default group policy' to be more clear.
BUGFIX: Couldn't delete a topic that had previously had a hashtag that had been deleted.
BUGFIX: Fixed a race condition in the test topics page when deleting topics.
CHANGE: In the Files section, display the Updated field instead of the Created field for Uploaded date.
CHANGE: Disable Action button on Members page if no members are selected.
CHANGE: Tweaked URL text in confirmation email to match the URL itself.

BUGFIX: Fix encoding issues with CSV formatted member list download.
CHANGE: The pending message notification email now uses the pending message's subscriber email address instead of the Sender line when describing who the message is from.
CHANGE: On the Members page, only bring up the Action dialog if at least one member is selected.
NEW: Include in the activity log the message sent to someone when directly adding them, similar to how invites are done.
INTERNAL: Fixed database connection closing issue.

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