weechat: update to 3.1

== Version 3.1 (2021-03-07)

New features::

  * core: add options weechat.look.hotlist_update_on_buffer_switch and weechat.look.read_marker_update_on_buffer_switch (issue #992, issue #993)
  * core: add option sec.crypt.passphrase_command to read passphrase from an external program on startup, remove option sec.crypt.passphrase_file (issue #141)
  * core: improve debug in command /eval: display more verbose debug with two "-d", add indentation and colors
  * core: add options "setvar" and "delvar" in command /buffer, rename option "localvar" to "listvar"
  * core: add buffer local variable "completion_default_template" (evaluated) to override the value of option "weechat.completion.default_template" (issue #1600)
  * core: add option "recreate" in command /filter
  * core: add raw string in evaluation of expressions with "raw:xxx" (issue #1611)
  * core: add evaluation of conditions in evaluation of expressions with "eval_cond:xxx" (issue #1582)
  * api: add info_hashtable "secured_data"
  * irc: add info "irc_is_message_ignored"
  * irc: add server option "default_chantypes", used when the server does not send them in message 005 (issue #1610)
  * trigger: add variable "${tg_trigger_name}" in command trigger evaluated strings (issue #1580)

Bug fixes::

  * core: fix quoted line in cursor mode (issue #1602)
  * core: fix wrong size of the new window after vertical split (issue #1612)
  * core: do not remove quotes in arguments of command /eval as they can be part of the evaluated expression/condition (issue #1601)
  * core: display an error when the buffer is not found with command /command -buffer
  * buflist: add option buflist.look.use_items to speed up display of buflist (issue #1613)
  * irc: add bar item "irc_nick_prefix"
  * irc: fix separator between nick and host in bar item "irc_nick_host"
  * irc: fix completion of commands /halfop and /dehalfop

Documentation::

  * do not build weechat-headless man page if headless binary is disabled (issue #1607)

(nia)