old_contents: """Default configuration options for `matplotlib`"""
  
  from matplotlib import rc, rcParams
  
  rc('text', usetex=True)
  rc('font',**{'family':'serif','serif':['Computer Modern Roman']})
  rcParams['xtick.labelsize'] = 10
  rcParams['ytick.labelsize'] = 10
  rcParams['axes.labelsize'] = 14
  rcParams['text.latex.preamble']=[r"\usepackage{amsmath}"]
  
new_contents: """Default configuration options for `matplotlib`"""
  
  from matplotlib import rc, rcParams
  
  rc('text', usetex=True)
  rc('font',**{'family':'serif',
               'serif':['Computer Modern Roman','cmu serif']+rcParams['font.serif']})
  rcParams['xtick.labelsize'] = 10
  rcParams['ytick.labelsize'] = 10
  rcParams['axes.labelsize'] = 14
  rcParams['text.latex.preamble']=[r"\usepackage{amsmath}"]
  
subject: fix issue with Computer Modern Roman font (issue #44) (#45)