added num ndarray2Base64 encoding for image conversion to json
added basic datalogger
fixed messageBus.unsubcribe dict has no attr remove
added datalogger and testing
fixed messageBus.unsubcribe dict has no attr remove
commited MichaelBauer's selectArb
simple datalogging
fixed pyqt5 import error
Merge branch 'master' of git://qao.physik.uni-kl.de/qao-repo/qao

Conflicted:
	src/qao/io/messageBus.py
Merge branch 'master' of bec.physik.uni-kl.de:all/qao
added saveSeries to imagefile. minor pep8 changes.
Correctly name and add createBGR() and createRGB() colormap functions.
image_series added: saves image series to hd5
Merge branch 'master' of http://bec.physik.uni-kl.de/gitlab/all/qao

Conflicts:
	src/qao/io/imagefile.py
Use setuptools in for allowing 'python setup.py develop' environment.
imageseries support 2d as well es 3d image.
Generator for qt get / set / notify code.
Merge qao from AG Widera.
Cleanup execute flags.