3.2.1

• moved endpoint discovery to functions.php
• added missing i18n strings
• removed polyfill
• Enable option for page support
• Allow custom post types to declare support for webmentions as a feature which will enable pings.
• Remove new meta properties from being added during preprocessing as these are added after Semantic Linkbacks Enhancement.
• Move new meta properties to being built into webmention code
• Store webmention source in comment meta but fall back to checking comment_author_url if not set.
• Store webmention creation time in comment meta as comment time is overridden by Semantic Linkbacks allowing to determine if a comment has been modified.