added separatetrans stuff
separatetrans working (or not breaking at least)
tweak beta initialization
Merge branch 'master' into separate-trans

Conflicts:
	internals/transitions.py
	models.py
untested sgdstep for separate trans
clean up some None passing stuff
replace sgd_onepass and sgd_manypass with sgd_passes
maybe working?
basic outline of joblib for meanfield
Merge branch 'joblib' into separate-trans

Conflicts:
	basic/pybasicbayes
add assertion check for separate trans
clean up _HMMSVI inheritance
working stuff, VLBs go up too
tested and nice
cleaner joblib business
update pybasicbayes
fix typo
tweak example
remove old parallel.py ipython parallel code
add joblib for sampling
possiblechangepoints models: no changepoints arg means all possible changepoints