On the way to .gno

[faddat]

This is the PR/Branch from which I'll be working on .gno files.

Here are my aims

Immediate and for this PR:

1. to make GNO easier to learn by clearly distinguishing Go from Gno
2. ensure that .gno files are properly recognized by any system that may wish to use thenm

Subsequent PR's

Visual Stuido code extension that supports gno

[moul]

👋

I use emacs, here is the line I added ->

(add-to-list 'auto-mode-alist '("\\.gno\\'" . go-mode))