Cosmetic changes.
Do  not  truncate the  plotted  prior  densities  with the  truncation
parameters  used   for  optimization  (second   and  third  positional
arguments  after   the  name  of   the  estimated  parameter   in  the
estimated_params block).
Fixed prior bounds (according to the doc in master branch).

 * Second  and  third  positional  arguments  after the  name  of  the
   estimated  parameter   in  the  estimated_params   block  are  only
   considered in the optimization stage (not in the MCMC)

 * Do not  store bounds  in bayestopt_, because  bounds do  not always
   reflect restrictions implied by prior shapes.

 * prior_bounds routine  returns a structure  (with fields lb  and ub)
   instead of a matrix.
Fixed test (new data interface).
Do not force the user to provide a clean m data file when using the legacy data interface.

Note that  all the variables  listed in varobs  need to have  the same
number of observations.