Leftover error that I cannot fix:

* https://github.com/python/mypy/issues/708

Leftover error that I am unsure of what to do:

* xml handlers are not properly typed

(it seems like nothing in slix is using it, considering a removal
 instead of adding an Union everywhere)

almost perfect, except for python < 3.9 making it so we can’t have nice
things.

Fix a bug in the SASL implementation as well. (some special chars would
make things crash instead of being escaped)

XEP-0045: Add a helper method to request voice

See merge request !165

This can be used in a moderated room when we are only a visitor.

xmlstream: do not re-send queued stanzas on each connect

See merge request !163

each sent stanza should be purged, obviously…

xmlstream: Fix slow tasks

See merge request !162

- wrong attribute used
- some mistakes in the slow tasks function

docs: Use the correct number for user_nick

See merge request !161

Thanks Felix for noticing!

XEP-0353: Use the correct callback for <proceed/>

See merge request !160

Thanks elmar for noticing!

xmlstream: fix use of the waiting queue

See merge request !159

Caps: do not broadcast presence on PEP plugin load/unload

See merge request !157

fix: use runpy to get versiion-data

See merge request !158

fix compatibility with debian stable (thanks jonas’)

and do not send a presence after updating if it is false

Fix component handshake

Closes #3464

See merge request !156

stanza.match worked accidentally, but the two elements used in that test
actually conflict with each other (not overriding the plugin_attrib,
which makes it then default to 'plugin', leading to shenanigans).

This was very much broken on plugin iterables and other reasons.

fix #3464

xmlstream: do not allow stanzas outside a session

See merge request !154

Fix #3441: Do not assign ID to inbound stanzas

Closes #3441

See merge request !155

except for the bind, obviously

XEP-0300: small fixes

See merge request !151

XEP-0030: Fix usage of ifrom in get_info

See merge request !152

- fix a typo in the default option (crash when hashing a file without
  providing a function)
- Fix the plugin_end method (classical del_feature footgun)

MAM Update

See merge request !149

XEP-0115: remove wrong coroutine=True argument

See merge request !150