Adapt help string
Parse multiple test result files into the TestResultsFiles property
TestResultsFile now calls TestResultsFiles
Refactor WhenParsingTestResultFiles so that multiple result files are possible
Remove unused using
Create test for aggregated results
Simplify HasTestResults
Comment out failing test
Make it compile
Tests for MultipleTestResults
Tests for GetScenarioOutlineResult and GetScenarioResult
Add support for multiple test results to MsTestResults