This adds h-geo microformat support. It's clunky but it should work. I'm no PHP gal so I hope you have CI or something that would test it.

Test case: [this post by me](https://fireburn.ru/posts/1567956895) that should contain a checkin with h-geo embedded. Should be parsed with latitude and longitude, showing a map in applications like Monocle.

closes #92

we also need the controller files!

GAE now runs composer itself and dev dependencies are not installed

https://cloud.google.com/appengine/docs/standard/php7/specifying-dependencies

forgot a key word

let's try the default

deploy Google App Engine version to PHP 7.2

closes #86

more consistently returns HTTP 410 now

This adds a new property, "meta", which includes alt text and has room to include additional properties later.

closes #85

Fix h-entry with h-card before it

The previous check removed a h-card, but this one still takes the first of the original array. Which means, in the case of `h-card+h-entry`, the h-card get’s removed, but then the if triggers and the `h-card` is selected.

replaces #78

closes #79

* a single h-entry and h-card, where the h-entry has no URL, will result in a permalink page with that h-entry
* multiple h-entrys followed by an h-card is a feed

closes #77

including from rel=alternate