0.5.3 is 0.5.2 with two fixes:

• Connecting your account opens the Extension tab in settings, rather than
landing on Reading.
• In Cards, the thumbnail moved to the right-hand side so every headline
starts at the same left edge. Previously an article with a picture
indented its title and one without did not, which made a mixed list step
in and out down the page.

New in 0.5.2
• A full-page reader. Open it from the toolbar button or with Alt+Shift+R: your
folders on the left, articles in the middle, the full article text in place —
no need to leave for the website.
• The extension now fetches articles itself, in your browser, instead of asking
our server to fetch them. Sites that only answer to a real browser — intranet
pages, anything behind a company login, feeds that block data-centre traffic —
work now, because the request comes from your machine with your own cookies.
This uses an optional permission that is requested from a button inside the
extension, never at install time, and can be withdrawn at any point.
• What the reader extracts is saved to your FeedBro account, so an article you
have already opened reads the same on your phone or on the website.
• Per-feed controls: rename a feed, set how often it refreshes, how many
articles to keep, and the sort order — per feed, and only for you.
• Light, dark and sepia themes, plus keyboard shortcuts (j/k, m, s, o, ?), both
shared with the website through your account.
• Collections, read-later and unread counts stay in step with feedbro.com in
both directions.

Version 0.1.9

The right-click menu now says "Fix this page on FeedBro". It works on articles and on RSS/Atom feed pages.
Fixing a feed page that FeedBro's servers can't reach now updates that feed straight from what your browser shows.
Clearer messages after a fix: "Updated … from your browser — N new articles" for feeds you already follow, and "Now following …" for new ones.