add code, kbd and quote to tags with space around them

these tags get cinched up currently, e.g. <p>here's some<code>code</code></p> and <p>I said<q>yes!<q>and left.<p>
tests for 6e5005ef7ed7c3dd9baf6ecc39c3ec1b2470b068
tests for 6e5005ef7ed7c3dd9baf6ecc39c3ec1b2470b068

dammit! commited the wrong thing…fix that
jshint wanted the parens to continue past linting
just tidying up
tests for special tags need to pass the collapseWhitespace: true options
images are a special case
logic mistake - restore checks for presence of '/'
Merge pull request #67 from sndrs/gh-pages

Add code, kbd and q to list of tags with space around them.