Available in a git repository branch.
Branch: smcv/ready/htmlbalance
Author: smcv

My one-patch htmlbalance branch fixes incompatibility with HTML::Tree 4.0. From the git commit:

The HTML::Tree changelog says:

    [THINGS THAT MAY BREAK YOUR CODE OR TESTS]
    ...
    * Attribute names are now validated in as_XML and invalid names will
      cause an error.

and indeed the regression tests do get an error.

--smcv

done --Joey