add antenna for 4k
ongoing gui-controller separation work
gui-controller WIP: shrink control_util, move input_mode control updates to signal handler, factor out rbw option changes
device_widget: handle device and state change signals
rename device_widget.py, DeviceControlsWidget to device_controls.py, DeviceControls
move RBW to device controls
gui-controller WIP: move frequency controls to frequency_controls.py
gui-controller WIP: move frequency control methods from PlotState
gui-controller WIP: move frequency control methods from utils
gui-controller WIP: frequency control fixes
began adding example qt gui
added plot, freq, atten, and rbw controls to simple GUI
gui-controller WIP: fix exceptions on start
fix capture start
fix change rfe_mode
added support for WSA5000-108
changed default RBW value
fix sweep
made discovery widget more user friendly
spectrum is now adjusted depending on the attenuation value