UTF8 should always be validated for websockets, regardless of the incoming
message type.

Sanitize ::1 to 0::1 in WHOX output

Kiwi expects it due to https://github.com/kiwiirc/kiwiirc/pull/1244 , but
the corresponding spec change only altered the cap name, not the 005 name.

Unclear where we got draft/CHATHISTORY from, it looks like the merged drafts
have always used unprefixed CHATHISTORY as the token name.

WHO <nickname> should not respect +i

RPL_WHOISCHANNELS didn't have proper line breaks

LIST should not return ERR_NOSUCHCHANNEL for nonexistent channels

* Fix #1911 +s channels don't appear in /list even though on the channel

* use channel.HasClient instead of custom iterative checker

Having the 'samode' capability made all KICK commands privileged. This appears
to have been introduced unintentionally by 42316bc04f and I can't find
any discussion of a rationale. Since this goes against our policy that all
ircop (as opposed to channel founder) privileges must be invoked explicitly
(e.g. SAJOIN, SAMODE), remove this.

Refs:

* other instances in the codebase
* https://defs.ircdocs.horse/defs/numerics.html#err-needmoreparams-461
* https://modern.ircdocs.horse/#errneedmoreparams-461

For consistency with RFC2812, Bahamut, Hybrid, Insp, Plexus4, Unreal.
https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.8

At the expense of consistency with chary/solanum, irc2, and ircu2.

This should be disallowed; `MODE #keytest +k :` should just be an error.

CHATHISTORY INVALID_TARGETS was missing the subcommand parameter

INVITE did not exempt from +b unless the channel was coincidentally also +i.
This was a regression introduced in v2.4.0.

See #1858: this was the intent all along, but I missed this issue.

The channel mode +R used to both prevent joins by unregistered users,
and prevent unregistered users who happened to be joined from speaking.
This changes the behavior so that +R only prevents joins:

1. This allows users who were invited or SAJOIN'ed to speak
2. To restore the old semantics, chanops can set +RM

`WHO #channel o` is supposed to return only server operators.
This is RFC1459 cruft; just return an empty list in this case.

RPL_ENDOFWHO should send the original, un-normalized mask

Jobe points out that 0 is a valid oplevel in some contexts,
* is a better placeholder for "unimplemented".

Reported by @mogad0n; the mute mask was being case-canonicalized,
but the RELAYMSG identifier wasn't being case-canonicalized before
the check.

The arithmetic was assuming that the nickname is * (which it is
pre-registration). However, we were sending the actual nickname
post-registration. It would be simpler to always send *, but it
appears that the nickname is actually required by the spec:

>Replies from the server must [sic] contain the client identifier name or
>asterisk if one is not yet available.

RENAME (channel rename) that was a simple case change (e.g.
renaming #chan to #CHAN) would delete the channel :-|

This reverts commit ba21987d03.

changelog, documentation, and distrib updates for ergo 2.7

fix #1669

Sort snomasks for display rather than displaying them in hash order

Update status badges in readme for project rename

fix znc.in/playback for individual DM targets

This is a regression introduced in 0d05ab4ff4; playback for an individual
DM target would play all DMs.

Update run.sh to use newly renamed ergo binaries

Improved Spanish translations

Notable changes:
* Use of inclusive pronouns and words (think they/them but on a language
  that relies on gender for almost every word). Keep in mind this might
  cause some flame from conservative folks.
* Corrected many computer-generated translations (one of them translated
  "resume" to resumé)

fix #1661

If the relay bot and the owner share an IP, legacy bots that identify users
by user@host could misinterpret relayed lines as coming from the bot owner.
Try to avoid this by using the bot's account cloak where applicable.

fix #1647