v0.7.0

This release updates to Buildroot 2021.05 and OTP 24.0.2. If you have made a
custom system off this one, please review the nerves_system_br v1.16.0 release
notes.

• Updated dependencies

  • nerves_system_br v1.16.0
  • Buildroot 2021.05
  • Erlang/OTP 24.0.2

• Improvements

  • This release now contains debug symbols and includes the Build-ID in the
    ELF headers. This makes it easier to get stack traces from C programs. As
    before, the Nerves tooling strips all symbols from firmware images, so this
    won't make programs bigger.
  • Enable compile-time wpa_supplicant options to support WPA3, mesh
    networking, WPS and autoscan.