docs: def verify_package(verbose=True):
      """Ensure the package has a config file and a valid experiment file."""
      is_passing = True
  
      # Check the config file.
      if os.path.exists("config.txt"):
          log("✓ config.txt is OK",
              delay=0, chevrons=False, verbose=verbose)
      else:
          log("✗ config.txt is MISSING",
              delay=0, chevrons=False, verbose=verbose)
          return False
  
      # Check the experiment file.
      if os.path.exists("experiment.py"):
  
          # Check if the experiment file has exactly one Experiment class.
          tmp = tempfile.mkdtemp()
          for f in ["experiment.py", "config.txt"]:
              shutil.copyfile(f, os.path.join(tmp, f))
  
          cwd = os.getcwd()
          os.chdir(tmp)
  
          open("__init__.py", "a").close()
          exp = imp.load_source('experiment', os.path.join(tmp, "experiment.py"))
  
          classes = inspect.getmembers(exp, inspect.isclass)
          exps = [c for c in classes
                  if (c[1].__bases__[0].__name__ in "Experiment")]
  
          if len(exps) == 0:
              log("✗ experiment.py does not define an experiment class.",
                  delay=0, chevrons=False, verbose=verbose)
              is_passing = False
          elif len(exps) == 1:
              log("✓ experiment.py is OK",
                  delay=0, chevrons=False, verbose=verbose)
          else:
              log("✗ experiment.py defines more than one experiment class.",
                  delay=0, chevrons=False, verbose=verbose)
          os.chdir(cwd)
  
      else:
          log("✗ experiment.py is MISSING",
              delay=0, chevrons=False, verbose=verbose)
          is_passing = False
  
      # Make sure there's a help file.
      is_txt_readme = os.path.exists("README.md")
      is_md_readme = os.path.exists("README.txt")
      if (not is_md_readme) and (not is_txt_readme):
          is_passing = False
          log("✗ README.txt or README.md is MISSING.",
              delay=0, chevrons=False, verbose=verbose)
      else:
          log("✓ README is OK",
              delay=0, chevrons=False, verbose=verbose)
  
      # Check front-end files do not exist
      if os.path.exists("templates/complete.html"):
          log("✗ templates/complete.html will CONFLICT with shared front-end files inserted at run-time, please delete or rename.",
              delay=0, chevrons=False, verbose=verbose)
          return False
      elif os.path.exists("templates/error_wallace.html"):
          log("✗ templates/error_wallace.html will CONFLICT with shared front-end files inserted at run-time, please delete or rename.",
              delay=0, chevrons=False, verbose=verbose)
          return False
      elif os.path.exists("templates/launch.html"):
          log("✗ templates/launch.html will CONFLICT with shared front-end files inserted at run-time, please delete or rename.",
              delay=0, chevrons=False, verbose=verbose)
          return False
      elif os.path.exists("static/css/wallace.css"):
          log("✗ static/css/wallace.css will CONFLICT with shared front-end files inserted at run-time, please delete or rename.",
              delay=0, chevrons=False, verbose=verbose)
          return False
      elif os.path.exists("static/scripts/wallace.js"):
          log("✗ static/scripts/wallace.js will CONFLICT with shared front-end files inserted at run-time, please delete or rename.",
              delay=0, chevrons=False, verbose=verbose)
          return False
      elif os.path.exists("static/scripts/reqwest.min.js"):
          log("✗ static/scripts/reqwest.min.js will CONFLICT with shared front-end files inserted at run-time, please delete or rename.",
              delay=0, chevrons=False, verbose=verbose)
          return False
      elif os.path.exists("static/robots.txt"):
          log("✗ static/robots.txt will CONFLICT with shared front-end files inserted at run-time, please delete or rename.",
              delay=0, chevrons=False, verbose=verbose)
          return False
      else:
          log("✓ no file conflicts",
              delay=0, chevrons=False, verbose=verbose)
  
      return is_passing