/home/cristobal/anaconda3/envs/astroconda/lib/python3.6/site-packages/plottery/plotutils.py:175: MatplotlibDeprecationWarning: Support for setting the 'text.latex.preamble' or 'pgf.preamble' rcParam to a list of strings is deprecated since 3.3 and will be removed two minor releases later; set it to a single string instead.
rcParams[key] = default[key]