Groups.io: Changelog

BUGFIX: Don't include links to profiles of banned members when viewing messages.
CHANGE: When visiting a manual in the help center, display the table of contents.
CHANGE: Wiki pages now use the wiki page ID instead of the title (with exceptions for _Sidebar/_Footer) to prevent link breakage when titles change.
INTERNAL: A lot of work to enable distributed tracing of the internal systems.

NEW: Updated Help Center manuals with Nina's updates, including reformatted PDFs.
SYSADMIN: Continued debugging issues with the new database server.
CHANGE: Documented photo/file upload size limits and increased them for premium/enterprise groups.
SYSADMIN: Upgraded the web servers with more memory to deal with increased file/photo upload sizes.
CHANGE: Rolled back the List-Id change from 4/25/20.
BUGFIX: Sorting by file type in the Files section would sometimes return the same results over multiple pages because our sort criteria wasn't stable.
INTERNAL: We now clean up unused RSS feeds in the database.
INTERNAL: On an edited message, check if the digest message exists already before adding it, to prevent postgres log messages.
INTERNAL: Changed nginx log format back to combined to goaccess can parse user agents.
INTERNAL: Work to make it easier to add additional FBL providers.
API: /getevent wasn't obeying the group calendar permissions setting.
NEW: We now parse more information about which message was flagged as spam from an FBL report, and send that out to the user and group owners.
CHANGE: The List-Id email header now includes the group id, to better help us parse FBL reports.

CHANGE: We now automatically delete drafts that are older than two weeks.
INTERNAL: We now reuse SMTP connections when sending email to major providers, instead of opening a new connection for each email.
INTERNAL: On advice from Comcast, subscribed to the Comcast FBL, along with several other FBLs.

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