Inanity-bot now grumbles about "text following footers" if a paragraph starts "Note:"

If a commit message contains a "Note: ..." paragraph, the 'bot now sees "Note:" as a footer-tag.
It used to only recognise tags with hyphens in them, "Task-number:" and "Change-Id:" most obviously, but we changed that when we added support for "Fixes:", so the regex now matches "Note:" too (along with "Testing:", "Bonus:" and various other non-tags). Previously it could have also triggered on "Post-script:", "Foot-note:", "Speed-up:" or various other non-tag tokens, so this is not entirely a new problem.

Possible solutions:

• Grin and bear it (as we're currently doing)
• Use a white-list as the regex, /(Task-number|Change-Id|...):/
• Complicate the check for "text following footers"

Combining the last two, for example, the script could keep track of what "footers" it thinks it's seen, so we could look to see whether any of a white-list of footers has been seen, particularly if the immediately preceding line is the only "footer"; if not, reclassify the "footer" as just part of the text we're seeing follow it, instead of grumbling.