Fixed the TRX serializer to not fail on a missing stacktrace. According to vstst.xsd (%VSINSTALLDIR%\xml\Schemas\) the stracktrace node is optional.
Fixed the TRX serializer to not fail on a missing stacktrace. According to vstst.xsd (%VSINSTALLDIR%\xml\Schemas\) the stracktrace node is optional.

rndsolutions/trx-merger,rndsolutions/trx-merger