Tcllib html module tiny suggestion

I suggest adding an alias to the Tcllib html module for the 
html::html_entities function: html::escape

Or at the very least to change the docs to mention the word "escape"
which is what I think most people would search for, e.g., replacing:

    This command replaces all special characters in the string with their
HTML entities and returns the modified text.

with something like:

    This command performs HTML escaping. It returns a copy of the given
string with all HTML special characters replaced with their HTML entities
(e.g. "this & <that>" is returned as "this &amp; &lt;that&gt;").