Modmail bot 3.4.0

Added

• Thread cooldown!
  • Set via the new config var
    Code:

    thread_cooldown

  • Specify a time for the recipient to wait before allowed to create another thread.
• Fallback Category (thanks to DAzVise PR#636)
  • Automatically created upon reaching the 50 channels limit.
  • Manually set fallback category with the config var
    Code:

    fallback_category_id

• "enable" and "disable" support for yes or no config vars.
• Added "perhaps you meant" section to
  Code:

  ?config help

• Multi-command alias is now more stable. With support for a single quote escape
  Code:

  \"

• New command
  Code:

  ?freply

  which behaves exactly like
  Code:

  ?reply

  with the addition that you can substitute
  Code:

  {channel}

  Code:

  {recipient}

  and
  Code:

  {author}

  to be their respective values.
• New command
  Code:

  ?repair

  repair any broken Modmail thread (with help from @officialpiyush).
• Recipient get feedback when they edit message.
• Chained delete for DMs now comes with a message.
• poetry (in case someone needs it).

Changed

• The look of alias and snippet when previewing.
• Message ID of the thread embed is saved in DB, instead of the original message.
• Swapped the position of user and category for
  Code:

  ?contact

• The log file will no longer grow infinitely large.
• Hard limit of maximum 25 steps for alias.
• Code:

  ?disable

  is now
  Code:

  ?disable new

Fixed

• Setting config vars using human time wasn't working.
• Fixed some bugs with aliases.
• Fixed a lot of issues with
  Code:

  ?edit

  and
  Code:

  ?delete

  and recipient message edit.
• Masked the error: "AttributeError: 'int' object has no attribute 'name'"
  • Channel delete event will not be checked until discord.py fixes this issue.
• Chained reaction add / remove.
• Chained delete for thread channels.

Internal

• Commit to black format line width max=99, consistent with pylint.
• Alias parser is rewritten without shlex.
• New checks with thread create / find.
• No more flake8 and travis.