fixed a bug that causes some warnings
fixed "comment_ID" bug
added "esc_url_raw"
updated readme
nicer hooks

* added post-id to `webmention_links` filter
* improved `publish_post_hook` function
oops
see readme ;)
v2.1.0
keep webmention as comment type
a nicer response if WebMention was successful
v2.1.1
now ready to use in a bundle
simplified the class check
changed FAQ
fixed some warnings
updated readme
a small fix

thanks @acegiak
fixed discovery mechanism

support multiple rel values like <link rel="webmention
http://webmention.org/" />

thanks @snarfed
added relative url support

fixed #15
nicer target check