SyntaxConstructClassifier.GetClassificationSpans filter out invisible spans
further optimize SyntaxConstructClassifier
add more tests for SourceCodeClassifier
optimize SyntaxConstructClassifier
replace lock with atom in SyntaxConstructClassifier
SyntaxConstructClassifier clears the location cache on ITextBuffer.Changed synchronously
Merge pull request #187 from vasily-kirichenko/colorizer-optimization2

Colorizer optimization