…asses are added

…ssions etc) out of delfi.py, updated cosmic_shear.ipynb example

…changed emcee initialization to randomly sample previous posterior samples from all but the bottom third of log-posterior values

… samples only

…ts in setup.py, updated saver() function in delfi.py

…g routine (nearly done)

… to bbox_inches=tight inside savefig()

…l to tfp (might already be done on tf2 branch). Early stopping has a bug. Don't know if can install directly from pip yet (pulling tfp from my repo). Need to decide on weighting - I've gone with using -lnL, and the weighting log_prob, but really we should use exp(-lnL) and prob. The problem with this is that it can set all weights to zero when distribution if far from ideal. Really we should maximise the ELBO rather than doing what we are doing right now...

…_mean)

… of catgorical

…aining