* Honour &twextwidth in Asif() call
* DRY'd list patterns
* Planning to remove superfluous (carried over from RST?) indent code
Disabled automatic use of SyntaxRange#Include()

* SyntaxRange's mechanics causes spelling highlighting
  to be disabled. SyntaxRange can now be activated with
  :call AsciidocEnableSyntaxRanges()

use   :e   to re-load the non SyntaxRange display.
Add visual maps for making and out/indenting lists