Adding generic PTMCMC with very similar interface as emcee. Uses mpi4py
to do parallel tempering. Much faster and cleaner than previous
implementations.
Added auxilary jump proposal to PTMCMC sampler.
Fixed bug in PTMCMC code dealing with covariance matrix update and
stopping criterion.
Fix further bugs in PTMCMC sampler
Changes to get correct normalization in bayesutils
Made PTMCMC much more memory friendly. Added a buffer to draw
differential evolution points instead of using entire chain
Made covariance matrix option more clear in PTSampler docstring
Small bug fix in PTMCMC.
Added small tweaks to make CW waveform generator a bit faster.
Fixed weighting issue in 1d marginalized plots in bayesutils.
Fixed HUGE error in luminosity distance function