Merge pull request #18 from avsm/master

Explicitly depend on `Re_str` instead of a silent dependency on Cohttp.
Blog.Entry.t.author -> authors
Foundation.Blog.post takes multiple authors
adjust lib_test/
properly render no-, one- and multi-author
Merge pull request #19 from pqwy/multi-author

Multi author
bump to 0.0.7
Adapt to Conduit APIs