go.py 3.0.2: regexp search & cancel

[zaeph]

Script info

• Script name: go.py
• Version: 3.0.2

Description

Added 2 features:

• Regexp search (off by default)
• Cancel with /window scroll_bottom (there could be other nice cancellation to add, but this is the one that I use the most)

Checklist (script update)

Haven't found a repo for the original script from the original author. Changes are non-controversial. I think @flashcode has taken over the maintenance.

• [ ] Author has been contacted
• [ ] Single commit, single file added
• [ ] Commit message format: script_name.py X.Y: …
• [ ] 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

First time contributor. If commits need to be adjusted (e.g. squash and with version added), let me know and I can do the legwork.