styling due to the mode. This makes it possible to have selection and
  bracket markup look good even over styled text (esp. italics)

it now also returns the parser state at that position

there might be a widget inside the editor that wants to be
clickable

(if there's a form field named submit, you can't)

(courtesy of Mark Lentczner)

this wasn't needed, and apparently offsets on an element with
a border do not 'add up' -- if you follow the offsetParent
links, summing the offsets, the border is not counter on Chrome
and FF

Opera and some IEs force all newlines to become \r\n. IE9
does not, so the sniffing was getting a bit ugly.