v1.13.2

This release includes a patch release update to
Buildroot 2020.08.2.

• Updated dependencies

  • nerves_system_br: bump to v1.13.5
  • erlinit 1.9.0

• Improvements

  • Switched source for built-in WiFi module firmware. This pulls in newer
    firmware versions that were found to fix issues on the Raspberry Pi 4. It
    may improve built-in WiFi on other Raspberry Pis.