Fixes #721 (#282)

- Ensure minimum of 2 newlines after GO statement
- All existing unit tests are passing, indicating this is respecting scenarios where users have comment lines after GO statements (this happens in many other tests)

test/Microsoft.SqlTools.ServiceLayer.UnitTests/Formatter/GeneralFormatterTests.cs

@@ -10,6 +10,20 @@ namespace Microsoft.SqlTools.ServiceLayer.UnitTests.Formatter
 {
     public class GeneralFormatterTests : FormatterUnitTestsBase
     {
+        [Fact]
+        public void GoNewLineShouldBePreserved()
+        {
+            LoadAndFormatAndCompare("GoNewLineShouldBePreserved", 
+                GetInputFile("Go.sql"),
+                GetBaselineFile("Go_NewlineHandling.sql"), 
+                new FormatOptions() { 
+                    KeywordCasing = CasingOptions.Lowercase,
+                    DatatypeCasing = CasingOptions.Uppercase,
+                    PlaceEachReferenceOnNewLineInQueryStatements = true
+                }, 
+                verifyFormat: true);
+        }
+
         [Fact]
         public void KeywordCaseConversionUppercase()
         {