Make TestBase virtual
Defer Configuration to CompilerArguments, this saves the proliferation of ActiveConfiguration requests and allows to to gracefully fallback to ConfigurationSelector.Default
Use the doc filename rather than using editor property, occasionally the editor can be null
Remove the unnecessary parsed document check and rely on GetLanguageItem which doesn't use the parsed document either
Added initial debug resolver provider tests and TestViewContent and TestWorkbenchWindow
Clean open namespaces
Removed unnecessary function call
Ensure composition errors are shown in parameter tips rather than hiding them
bumped version
Removed dead code, old comments, unused open statements