further loosen unit test check for task ETA. for #179
publish: detect and special-case tumblr markup. fixes #180
revise rel-syndication FAQ
update replace_poll_tasks cron job to understand slow poll frequency
Support rel=feed on <a> tags in addition to <link> tags.
Merge pull request #182 from kylewm/ppd-anchor-tags

posse-post-discovery: support rel=feed on <a> tags in addition to <link> tags