v3.5

• Added event support (immediate transfer) to and from a MQTT broker
• Generalized the TransferBase concept so that values can be synchronized between modules, a web server and/or a MQTT broker, in an extendable way. Support for synchronizing with other external systems or protocols can be added more easily.
• Added an example that does not synchronize with a web server, only with a MQTT broker. Also demonstrates the PJON LocalFile strategy for testing without hardware modules.
• Added optional support for JSON based MQTT payloads.
• Updated readme with information about MQTT usage and topic structures.
• Minor bug fixes and improvements.
• Tested with PJON 12.1