* refactor of Contact/Client out_path_len (stored in files), from signed to unsigned byte (+2 squashed commits)

Squashed commits:
[f326e25] * misc
[fa5152e] * new 'path mode' parsing in Dispatcher

examples/simple_repeater/MyMesh.h

@@ -92,6 +92,7 @@ class MyMesh : public mesh::Mesh, public CommonCLICallbacks {
   uint8_t reply_data[MAX_PACKET_PAYLOAD];
   uint8_t reply_path[MAX_PATH_SIZE];
   int8_t  reply_path_len;
+  uint8_t reply_path_hash_size;
   TransportKeyStore key_store;
   RegionMap region_map, temp_map;
   RegionEntry* load_stack[8];