Merge remote-tracking branch 'origin/dev'

Merge pull request #326 from jmkristian/w6jmk-cm108

Windows USE_CM108

Merge branch 'dev' to master for release 1.6.

Release 1.5.

Issue 132 continued. If a client app tried to send connected data when

the transmitter was already on, the packet would get stuck in the outgoing
data queue.

Issue 132 - Sometimes, when outgoing frames would exceeed the "window…

…" size

(MAXFRAME or EMAXFRAME) they would get stuck in a queue and not be released later.

1.5 beta test 2 - KISS over TCP behaved strangely with multiple clients.

1.5 beta test version.

Merge remote-tracking branch 'origin/dev'

Put version 1.4 into master branch.

Version 1.4 beta test.