The new version afects three of the python source files:
slab.py, slab_meas.py, slab_fft.py
With those changes SLab should work both in Python 2.7 and 3.x branchs.
I have also added a new script slabTest.py in the main code folder. This scripts lets you check the basic SLab functionality so you can verify that you have a working SLab environment.
Current SLab version has been checked on Windows under Anaconda with Python 2.7.10 and 3.5.1.
Basic functionality has also been verified on Linux with Python 2.7.