Update ver strings in a non-python, ordinary text file in root of package (next to setup.py).
        :return:

def jiggle_text_file(self):  # type: () -> int
        """
        Update ver strings in a non-python, ordinary text file in root of package (next to setup.py).
        :return:
        """
        changed = 0

        files_to_update = []
        for version_txt in self.file_inventory.text_files:
            if os.path.isfile(version_txt):
                files_to_update.append(version_txt)

        if not files_to_update and self.create_configs:
            files_to_update = self.file_inventory.default_text_file

        for version_txt in files_to_update:
            if os.path.isfile(version_txt):
                with io.open(version_txt, "w", encoding="utf-8") as outfile:
                    if self.version is None or self.version == "":
                        raise JiggleVersionException("Can't write version")
                    outfile.writelines([unicode(self.version_to_write())])
                    outfile.close()
                    changed += 1
        return changed