styleproperties are now allowed to be added to elements, style all the things!
iframetags are now allowed, which can be used to embed various external pages like YouTube, Google Maps, etc.
^will now match beginning of line and
$will now match end of line.
/\[\]/previously didn't work, requiring
/\\[\\]/. Now you don't need to add the second backslash.
ignore-case:previously made the search case sensitive instead of what it says it does, oops.
/for relative links.
]]not properly styled in headings, which made them appear really small.
$$latex blocks couldn't contain single dollar signs