The 5.0.1 version fixes a bug with the bior_variant_to_tjson command.
An rsId was used to lookup the corresponding record in dbSNP.  However, with the newer versions (150,151) of dbSNP (vs the older 142 version),
a ClassCastException was thrown when verifying that the position from the returned dbSNP JSON record matched the input position.
This is because newer versions of dbSNP has the "POS" field as an integer instead of a string.
