adding xslt.useInternalErrors() function #22
added @andreyknupp's useInternalErrors() option to XML parsing too, to allow invalid XML to be transformed
Merge pull request #1 from MartijnR/master

added @andreyknupp's useInternalErrors() option to XML parsing too
Merge pull request #23 from andreyknupp/master

adding xslt.useInternalErrors() function #22