v1.11.2

Nerves support is shifting to Elixir Forum - Nerves Forum!
This will now be the preferred and primary source for gaining Nerves support
and documentation has been adjusted to reflect this shift.

• Set TERM from user terminal when running mix nerves.system.shell
  on MacOS. Fixes an issue where config menus were not rendering
• Documentation updates and improvements
  • Add instructions for mise
  • Remove USB Gadget mode serial references since not on official platforms