updating to 1.3

* Many minor bugfixes
* Added Reply-Context metadata to reblog whispers
* Added support for reading MF2 pages as part of ongoing effort to make plugin indieweb friendly

git-svn-id: https://plugins.svn.wordpress.org/whisperfollow/trunk@856896 b8457f37-d9ea-0310-8a92-e5e31aec5664