More clear formatting for posts.

[jtagcat]

Right now it's: feed_name - content - feed_item_link. Place the name and link on a separate line. In markdown, I'd imagine it to look like this:

[feed_name](feed_link): [Post](feed_item_link)

content

Subject line / feed item title can be the same as the content, or too long, so I'd rather not use it instead of the static 'Post' text.

[jtagcat]

embeds + title-only mode would also be nice.