Feature request: rel="alternate" type="text/mf2+html" discovery

[chrisbergr]

As brought up in the IndieWeb dev chat tonight, it would be a good idea if Aperture could follow links with the attributes rel="alternate" type="text/mf2+html".

e.g. <link rel="alternate" type="text/mf2+html" href="#" />

It would have to be clarified whether the content of the linked page is used directly or if it is offered as an additional option as suggested in #78. I would prefer the first option, otherwise there may be abonoments that have no entries.