Pass malformed scxml document parser errors through to the SCION callback interface
Instead of throwing the error: https://github.com/jbeard4/SCION/blob/2.0.0-w3c-ecma/lib/compiler/scxml-to-scjson.js#L249
Instead of throwing the error: https://github.com/jbeard4/SCION/blob/2.0.0-w3c-ecma/lib/compiler/scxml-to-scjson.js#L249