Some people use sequential version numbers and some people just want to watch the world burn.
Admittedly there may be a disconnect between the two but if Firefox can skip versions numbers why can I? And no, the gap in versions numbers is in no way related to my own mistakes this afternoon.
More importantly Link to Your Content has in fact been updated, complete with fixes for some IE users who were unable to link to posts or pages. So rather than lamenting the loss of versions 1.2 and 1.3 why not download version 1.4 and get back to linking.