* added 'wide.snr.thresh' config

* repeater: Wide mode, isHashNeighbor() now only considers neighbor nodes with SNR >= threshold

examples/simple_sensor/SensorMesh.cpp

@@ -867,6 +867,7 @@ SensorMesh::SensorMesh(mesh::MainBoard& board, mesh::Radio& radio, mesh::Millise
   _prefs.flood_max = 64;
   _prefs.interference_threshold = 0;  // disabled
   _prefs.cad_enabled = 0;             // hardware CAD before TX (off by default; 'set cad on')
+  _prefs.wide_snr_threshold = -8.0f;
 
   // GPS defaults
   _prefs.gps_enabled = 0;