steve-3.6.0

What's new:

• Remove charging profile regardless of reply status (#968)
• Set the correct http status if chargeboxid is not recognized (#1020)
• Allow Heartbeat Interval to be zero (#1088)
• Accept '"null" alongside of "{}" as empty payload (#1109)
• Update transactions web page with a better description of "Stop" functionality (#1162)
• Add thread name to logs in prod env (e2c4c14)
• Start using maven wrapper (#998)
• API endpoints for automation and integration (#910)
  This is big: We start exposing some APIs for 3rd party integration.
• Use the default values for input/output buffers (#846)
  This is big: There has been ongoing complaints about the memory behaviour, and more specifically OOM. @jpires did a great job uncovering and fixing it in #1058
• Update dependencies

Thanks to all the contributors!