0.11.3

Fixed

• ESP32: saving and loading a profile no longer logs error lines for keys that
  are absent by design — nvs_erase_key fail: ip NOT_FOUND and the rest of the
  static-address keys under DHCP, nvs_get_str len fail: host NOT_FOUND for an
  unset hostname, nvs_get_blob len fail: mac NOT_FOUND without a MAC override.
  The profiles ask isKey() before remove(), getString() and getBytes()
  (detail/prefs_tools.h); a real failure is still logged. ESP8266 and AVR are
  unchanged