Transverter mode support
For some devices: Airspy, Funcube Pro and Pro+, PlutoSDR Rx and Tx, RTLSDR added a "X" button that opens a dialog to set a frequency shift so that the actual center frequency sent to the device will be the one displayed minus this frequency shift. This facilitates the usage of up or down converters with these devices. This implements issue #54
Bug fixes
- LimeSDR: implemented a better way to enable/disable the NCO would using the CMIX_BYP_RXTSP or CMIX_BYP_TXTSP. This fixes issue #68
- LimeSDR: suspend the other threads while doing the stream delete/create on Tx side. Fixes lockup when Rx is running concurrently. This should fix issue #67
- Ubuntu 17.04 build: added libnanomsg4 as an alternative for nanomsg dependency. Fixes issue #66
- Exit DSPDeviceSourceEngine thread directly on stop() fixing a possible mutex lockup issue. This should fix issue #65
Non functional changes
Further refactoring to separate the GUI from the core application. Focusing on channel Rx plugins. Work done partially for AM, BFM, Channel Analyzers, ATV, SSB and DSD.
Fix branch removed
There was no real use of it.