docs: def load_version(filename='fuzzyhashlib/version.py'):
      """Parse a __version__ number from a source file"""
      with open(filename) as source:
          text = source.read()
          match = re.search(r"^__version__ = ['\"]([^'\"]*)['\"]", text)
          if not match:
              msg = "Unable to find version number in {}".format(filename)
              raise RuntimeError(msg)
          version = match.group(1)
          return version