Seems like a very significant update.

A lot of work went into this release.

Just a quick comment about the preview.

While markdown specifies that two newline characters are required for sending a block of text to the next line, in practice most Steem apps haven't followed that convention and one newline in markdown is translated into a newline in HTML in those apps.

Initially StemQ was following the markdown convention but some people noticed that the construct of paragraphs was different than on other more popular apps.
So I changed StemQ to be in line with those apps.

So maybe it might be an idea to configure your markdown library to do this as well.

Well done!