Please add support for cit/dit/yit (change/delete/yank all text within the selected tag)

Thanks!
Scott

From VIM Help:

Tag blocks                        *tag-blocks*

For the "it" and "at" text objects an attempt is done to select blocks between
matching tags for HTML and XML.  But since these are not completely compatible
there are a few restrictions.

The normal method is to select a <tag> until the matching </tag>.  For "at"
the tags are included, for "it" they are excluded.  But when "it" is repeated
the tags will be included (otherwise nothing would change).  Also, "it" used
on a tag block with no contents will select the leading tag.

"<aaa/>" items are skipped.  Case is ignored, also for XML where case does
matter.

In HTML it is possible to have a tag like <br> or <meta ...> without a
matching end tag.  These are ignored.

The text objects are tolerant about mistakes.  Stray end tags are ignored.