Looks great - I've been using markdown files and a markdown editor for my dev notes.

But I tend to create a file per week, with notes about what I have to do / have done, etc. by day within the weekly file.

Having one big file for a project that lasts months (or years) would be unworkable.

I'd like to see the ability to create and open whatever files I want, rather than just saving a single pre-determined file.

Good job, though - thanks!