This change removes the following warning that occurs when querying XCOM data:
becquerel/tools/xcom.py:403: FutureWarning: Passing literal html to 'read_html' is deprecated and will be removed in a future version. To read from a literal string, wrap it in a 'StringIO' object.
tables = pd.read_html(self._text, header=0, skiprows=[1, 2])
This change removes the following warning that occurs when querying XCOM data: