Updated the mark2 Gibbs sampler with Cython (untested)
Changed default behaviour: no longer fits at the start
Added quantize_split, for split-backend jitter modeling
Allowed reading of auxiliaries from HDF5 for Gibbs
Added some more jitter functions, preparation for optimized explicit jitter modeling.
Small bugfix: jitterext did not have log included
Changing the way jitter/ecorr is handled explicitly
Updated Gibbs mark1. Does not work properly when jitter is included
Debugging the new jitter stuff
Fixed the non-expanded jitter in Gibbs mark1