bugfix

* remove twitter support

fix multiline posts with smashed together paragraph tags

closes #117

remove instagram

escape html tags when creating html version

Return h-event location as an embedded h-card

fix authorship in some cases

accept webmention verification for pages with only mf1

if the document contains a link to the target, but that link is not in the parsed result, don't return an error, but also don't return the parsed document

bugfixes and better error messages

Bugfix for parsing Microformats JSON