jSMPP project update, 2.1.1 and 2.2.1 releases


The jSMPP project on Github stopped processing pull requests over a year ago and appeared to be needing some help.

I've recently started hosting it under https://github.com/opentelecoms-org/jsmpp and tried to merge some of the backlog of pull requests myself.

There have been new releases:

The new versions are easily accessible for Maven users through the central repository service.

Apache Camel has already updated to use 2.1.1.

Thanks to all those people who have contributed to this project throughout its history.