I3C: method declaration
I3C: Added and integrated  implementation skel
I3C: Implementation of the I3C methods
I3C: added I3C call method to main
I3C: decimal output for hops
I3C: Interpret send char as integer in debug output.
I3C: retrieveHexParameter checks for empty values
I3C: Use the "eco" client version.
Merge pull request #18 from penguineer/i3c

I3C XMPP methods and client.

Auto-merge, nachdem es jetzt über eine Woche rumlag. ^^