LizGoban 0.7.0-pre1

• Add "Auto overview" into Tool menu so that one can turn it off.
• Slightly improve bogus territory counts.
• Guess the rule from komi if RU (rule) property is missing in SGF.
• Fix SSL issue on Let's Encrypt. (ref ref)

Incompatibilities:

• Upgrade libraries (Electron 15, etc.). So you may need to do "npm install" again.