tweak neomutt build

add POD highlighting for shell

Tweak perl settings, move all into after-syntax file

add autofmt toggle

rename

mv .mutt/build-neomutt bin/setup-neomutt

remove hgflow

add .hgext/

add bin/setup-hg-evolve

remove mq and flow, unused

(0) -300 -100 -10 +10 +100 +300 tip

mercurial