nixos-wizard v0.1.3

Version 0.1.3 of nixos-wizard has been released. This patch contains a handful of bug fixes.

Fixes

• "None" options in certain menus no longer crash the config generator
• Fixed some incorrect keymap names being used for services.xserver.xkb.layout

Additionally, the keyboard layout option now generates a line for 'console.keyMap' as well.