Adds functionality to place a prior constrain on BSGL minimum value.
This can help smooth MCMC searches, but it remains unclear if this and
the BSGL_PREFACTOR don't invoke something strange.

Also ads check that numdets>2 and reduces linewidth of walkers

By default, convert to nat. log.

This is not ideal, it would be better to calculate the idxs for the
keys, but I don't see an easy to way to do it at the momemt.

1) Make tqdm import allow error and use it for the grid search as well
2) Allow functionality to change the flatten method in the 2D plot

- This requires more verbose input for all mulitple glitch searches (in
  the case that the prior is the same it will need to be repeated), but
  ultimately leads to greater flexibility.

Updates the logging initialisation so that, when called with -q flag,
the log file is still written with INFO level log messages (only the
console output is supressed).

Also fixes big in generate_initial_p0

If an initialisation step is callled, the sampler runs the simulations
for nsteps and selects the point with the highest lnprobability from
which to restart the simulations. Previously, only the last step was
used. In this update all steps are used and a message is printed to
allow the user to determine if the selected point is appropriate.

1) Colors the output depending on if it is burn-in or production
2) Adds another panel with the twoF values of all walkers (also colored
by bunr-in or prod)
3) Also adds more logging to writing par files

1) Fixes error in glitch logp ts check
2) Adds ts check to logp to avoid raising ValueError when one of the
   glitch times is before the tstart
3) Fixes bug in BSGL so that it can be used with glitch searches
4) Generates the output directory before attempting to write log file

- Adds mismatch spacings
- Adds maxNlocator option