Extending Aloha Editor with more html tags

Hi there,
I would like to use the address html tag. I found this thread which wasn’t really helpful for me: http://lists.typo3.org/pipermail/neos/2014-January/003907.html

When I copy&paste an address block into my content element, the address tag gets automatically removed.

How can I make it available in the dropdown where h1,h2 and so on is and how can I make sure the tags stays there?