- Rework ExpiringTimeTracker to be based on PolledTimeout.

- Ensure espnowDelay and floodingMeshDelay always performs maintenance.

- Rework MutexTracker to use shared_ptr.

- Change enums to enum class.

- Change typedef to using.

- Add HeapMonitor class.

- Make _messageIDs be a map instead of an unordered_map to reduce heap usage.

- Use the possibly broken wifi_country ESP8266 API to check for legal WiFi channels when setting WiFi channels.

- Make MessageData, RequestData and ResponseData contain a TimeTracker rather than inherit from TimeTracker.

- Add deprecated attribute to TransmissionResult.

- Remove superfluous elses.

- Reduce cyclomatic complexity.

- Change postfix ++ and -- to prefix.

- Generalize getEncryptedConnectionIterator method.

- Increase code NRVO compatibility.

- Change _connectionAttemptTimeoutMs type from int32_t to uint32_t.

- Add deprecated attribute to ESP8266WiFiMesh.

- Add some constness to TypeConversionFunctions.

- Move base36 arrays to PROGMEM in TypeConversionFunctions.cpp.

- Add deprecated atttribute to SHA1 and MD5 hashes.

- Remove _warningsEnabled in CryptoInterface since this has been replaced by the deprecated attribute.

- Prefix all TypeConversion getters with "get".

- Improve comments.

- Fix merge conflict.

libraries/ESP8266WiFiMesh/src/UtilityFunctions.cpp

@@ -30,7 +30,7 @@ namespace MeshUtilityFunctions
 {
   bool macEqual(const uint8_t *macOne, const uint8_t *macTwo)
   {
-    for(int i = 0; i <= 5; i++)
+    for(int i = 0; i <= 5; ++i)
     {
       if(macOne[i] != macTwo[i])
       {