Add shortcuts for formatting error information

test/tools/yulopti.cpp

@@ -80,10 +80,7 @@ public:
 		SourceReferenceFormatter formatter(cout);
 
 		for (auto const& error: m_errors)
-			formatter.printExceptionInformation(
-				*error,
-				(error->type() == Error::Type::Warning) ? "Warning" : "Error"
-			);
+			formatter.printErrorInformation(*error);
 	}
 
 	bool parse(string const& _input)

test/tools/yulrun.cpp

@@ -55,10 +55,7 @@ namespace
 void printErrors(ErrorList const& _errors)
 {
 	for (auto const& error: _errors)
-		SourceReferenceFormatter(cout).printExceptionInformation(
-			*error,
-			(error->type() == Error::Type::Warning) ? "Warning" : "Error"
-		);
+		SourceReferenceFormatter(cout).printErrorInformation(*error);
 }
 
 pair<shared_ptr<Block>, shared_ptr<AsmAnalysisInfo>> parse(string const& _source)