Update to 1.3.28

Version 1.3.28

2017-01-20 David Freese <iam_w1hkj@w1hkj.com>

5add320: Multiple xmlrpc servers
cf1b1bb: Separate PTT
07bf4b5: K2 comments
c5edf8e: User defined command buttons
71e5aac: ic7300 update
5960bd9: IC9100 update

Reported by: portscout