Steemblr is open source microblogging platform powered by steem blockchain . It allows user to post and explore content which is smaller than a traditional blog.
You can check developer version here: https://steemblr.com
To fully embrace hardfork20, steemblr got possibility of unlimited post editing. Right now you can edit your posts in every category. Under content you posted there is new icon to launch editor, you can do it on every app view - dashboard, explore, modal and your full blog. The content editor is the same as new post editor, it got exactly the same behavior and functionality.
It was done by loading data from existing post to the redux store into post editor reducer.
Syncing post deletion
Deleting post from the database when user deleted his post on other front-end. It was implemented by checking "deleted_comments" in every block with esync and then sending deleted steemblr post permlink with post author to firebase api to remove it from the database.
If you want to get involved, got questions, ideas, feature request you can contact me on discord https://discord.gg/hHmZgk6