's, 't, 'm, 'd, 're, 'll and 've are not converted by SmartyPants

[FSX]

's, 't, 'm, 'd, 're, 'll and 've are not converted by SmartyPants to ’*. That's because the ' is escaped to ' by the HTML renderer and that's why SmartyPants doesn't see it. I did some tests using Misaka an confirmed that smartypants_cb__squote is not called. Except when the '`' is located in a HTML block.

I don't really understand how characters are detected in SmartyPants so I don't know how to make a patch.