fish.py 0.13: handle message tags from ircv3

[freshprince]

Script info

• Script name: fish.py
• Version: 0.13

Description

handle message tags from ircv3

Checklist (script update)

• [X] Author has been contacted
• [X] Single commit, single file added
• [X] Commit message format: script_name.py X.Y: …
• [X] Script version and Changelog have been updated
• [X] For Python script: works with Python 3 (Python 2 support is optional)
• [ ] Score 100 / 100 displayed by weechat-script-lint