import bessel function
Merge branch 'master' into autofocus
Merge branch 'master' into autofocus

Conflicts:
	controls/camera.py
implement AF to view/camera.py
edit voltage_view 1. round
change minor things in voltage_view
add dispersion.py
change voltage view and control
change focustab, add scrollbar, voltage-view
fix reload/refresh bug in qds, modify toggel_simulation in SimSerial
remove simulation part in views/voltage
add new files, like minimal and views/voltage.py
fix in views/voltage.py simulation button
final fix of sim_button in views/voltage.py, modify search_function_name in simserial
implement CMD and PARMS in controls/voltage, change views/voltage from 255 to 5V
implement CMD and PARMS to controls/spectro
fix _S in controls/voltage.py
don.t know
Merge branch 'autofocus' of github.com:ottodietz/qdsearch into autofocus
changing _S in control/voltage