Support comments

[cqx931]

from email:

I was wondering: would it be easy to build into the parser something that would ignore everything between a "/" and a ">" in any of the explicit break tags? This would give me (and future people) a way to put comments into the markup. Obvious use case something like this:

<sb/ end of of section 1 >

but also:

<tb/ this sentence is ridiculous! >

[cqx931]

Parser: support html comments