This looks awesome: clean UI, keyboard centric interface, colaboration, easy to install, stores data on file system.
It would be great to have version control done internally - its mandatory for knowlege base and not something you should leave to the community.
What I lack so far is md preview scroll sync.
I am consfused on how to navigate site using rendered version, it looks like its always in the input mode with CTRL+p doing markdown preview.