* commit '3950ae51e':
Ensure that remove_pusher is always async (#7981)
Ensure the msg property of HttpResponseException is a string. (#7979)
Remove from the event_relations table when purging historical events. (#7978)
Add additional logging for SAML sessions. (#7971)
Add MSC reference to changelog for #7736
Re-implement unread counts (#7736)
Various improvements to the docs (#7899)
Convert storage layer to async/await. (#7963)
Add an option to disable purge in delete room admin API (#7964)
Move some log lines from default logger to sql/transaction loggers (#7952)
Use the JSON module from the std library instead of simplejson. (#7936)
Fix exit code for `check_line_terminators.sh` (#7970)
Option to allow server admins to join complex rooms (#7902)
Fix typo in metrics docs (#7966)
Add script for finding files with unix line terminators (#7965)
Convert the remaining media repo code to async / await. (#7947)
Convert a synapse.events to async/await. (#7949)
Convert groups and visibility code to async / await. (#7951)
Convert push to async/await. (#7948)
This is basically a contrived way of adding a `Recommends` on `libpq5`, to fix#5653.
The way this is supposed to happen in debhelper is to run
`dh_shlibdeps`, which in turn runs `dpkg-shlibdeps`, which spits things out
into `debian/<package>.substvars` whence they can later be included by
`control`.
Previously, we had disabled `dh_shlibdeps`, mostly because `dpkg-shlibdeps`
gets confused about PIL's interdependent objects, but that's not really the
right thing to do and there is another way to work around that.
Since we don't always use postgres, we don't necessarily want a hard Depends on
libpq5, so I've actually ended up adding an explicit invocation of
`dpkg-shlibdeps` for `psycopg2`.
I've also updated the build-depends list for the package, which was missing a
couple of entries.
