Allow third_party_signed to be specified on /join

Measure PresenceEventSource.get_new_events

handlers/sync: style fix, line too long

Signed-off-by: Patrik Oldsberg <patrik.oldsberg@ericsson.com>

Check that the disable_registration config key is handled correctly

handlers/sync: fix SyncResult not counting account_data change when converting to bool

This fixes account_data events not triggering an immediate /sync response

Signed-off-by: Patrik Oldsberg <patrik.oldsberg@ericsson.com>

Allow guest users access to messages in rooms they have joined

Add a test for TreeCache.__contains__

drop commented-out special casing for historyvisibility event
s/he/they/ for users

Test Filter.filter_rooms

Only send presence updates to remote hosts if user is ours

Also check that the __repr__ method for FilterCollection does something
sensible.

Fix flake8 warnings for tests

There should be no difference between guest users and non-guest users in terms
of access to messages. Define the semantics of the is_peeking argument to
filter_events_for_clients (slightly) better; interpret it appropriately, and
set it correctly from /sync.

Fix presence `currently_active`. Add presence metrics.

Rewrite presence for performance.

Mitigate against incorrect old state in /sync.