* [ new ] :doc for keywords
* [ doc ] for visibility
* [ more ] fixing help text, sentence for "mutual"
* [ doc ] for if then else
* [ doc ] for implicit arguments
* [ doc ] import
* [ cleanup ] doc for data
* [ doc ] for record
* [ doc ] for forall quantifier
* [ doc ] for `in' keyword
* [ doc ] for parameters block
* [ fix ] missing fence
* [ doc ] for where and mutual blocks
* [ doc ] for namespace blocks
* [ doc ] for with/proof
* [ doc ] for do blocks
* [ doc ] for rewrite
* [ doc ] for let binding
* [ doc ] for case...of and interfaces
* [ doc ] for fixity