preparing testing release 1.5.6

preparing next testing

preparing next stable release - first containing freedv

preparing release of next stable

prepared next testing

Merge pull request df8oe#483 from db4ple/active-devel

Changed all uses for audio generation to be based on the softdds functions.

bugfix +6khz/+12khz translation

prepared testing 1.1.1

bugfix version testing

bugfix redraw S-meter box