MQTT 5 message properties

Hi

You will find some implementation details here

As for running the MQTT 5 branch...

first ensure the directory you start from does not already have a sub-directory of node-red as this will be created when you git clone

  1. git clone https://github.com/Steve-Mcl/node-red.git
  2. git checkout mqtt5
  3. cd into the newly created node-red directory
  4. npm install
  5. npm run build
  6. npm run start

please feedback your thoughts and experiences - it could be vital in getting this merged.

Thanks.