Change the manhole SSH key to have more bits

fix VOIP crashes under Python 3

add some logging for the keyring queue

Fix jwt import check

Timeout reading body for outbound HTTP requests

* speed up room summaries by pulling their data from room_memberships rather than room state
* disable LL for incr syncs, and log incr sync stats  (#3840)

Newer versions of openssh client refuse to connect to the old key due to
its length.

Remove build requirements after building docker image

Send existing room tags down sync on join

Add apache vhost config to Readme

This handy code attempted to check that we could import jwt, but utterly failed
to check it was the right jwt.

Fixes https://github.com/matrix-org/synapse/issues/3793

why is it so damn slow?

guest users should not be part of mau total

When a user joined a room any existing tags were not sent down the sync
stream. Ordinarily this isn't a problem because the user needs to be in
the room to have set tags in it, however synapse will sometimes add tags
for a user to a room, e.g. for server notices, which need to come down
sync.

Limit the number of PDUs/EDUs per fedreation transaction

Only start postgres instance for postgres tests on Travis CI