Use 'comments' to ignore lines in block comments

[idbrii]

You had a comment that &comments aren't reliable, so I'm not sure if you want this feature. If you are interested in merging, then let me know and I'll do the work to remove the syntax detecting code. (From #3, I can tell you don't want to use syntax.)

Builds on my PR #22. The last commit is the one I'm proposing here.