plasticboy/vim-markdown — pull request #37 by cirosantilli (2013-04-24 16:02:32+00:00)
Title: Added mappings to navigate across headers

the modifications to the README explains new features, should be simple to test them with a file like like:

# a

## b

## c

### d

# e

## f

### g

## h

I could not yet get this working on visual mode.