GUI - update version string in doc

Merge pull request sonic-pi-net#810 from jweather/win28

use Sonic Pi's ruby to build docs in win-build-app.bat

GUI - disable experimental arg completion

GUI - save restore geometry

Changelog - update to reflect v2.5 development

bump internal version to 2.3.1

bump version to 2.2.1

Remove unnecessary capitalisation in README

Merge pull request sonic-pi-net#327 from jweather/win23

updated installer for Windows

move time machine from sorcerer to wizard