Convert line and col numbers to one-indexed in ToString() (#77)

* Convert line and col numbers to one-indexed in ToString()

* Update unit tests

src/SourceMapToolkit.CallstackDeminifier/StackFrame.cs

@@ -30,7 +30,7 @@ namespace SourcemapToolkit.CallstackDeminifier
 				output += $" in {FilePath}";
 				if (SourcePosition != null)
 				{
-					output += $":{SourcePosition.ZeroBasedLineNumber}:{SourcePosition.ZeroBasedColumnNumber}";
+					output += $":{SourcePosition.ZeroBasedLineNumber + 1}:{SourcePosition.ZeroBasedColumnNumber + 1}";
 				}
 			}
 			return output;

tests/SourcemapToolkit.CallstackDeminifier.UnitTests/StackTraceDeminifierEndToEndTests.cs

@@ -127,12 +127,12 @@ window.onload/<@http://localhost:11323/crashcauser.min.js:1:445";
    at Anonymous function (http://localhost:11323/crashcauser.min.js:1:445)";
 			DeminifyStackTraceResult results = stackTraceDeminifier.DeminifyStackTrace(ieStackTrace);
 			string exectedResult = @"TypeError: Unable to get property 'length' of undefined or null reference
-  at level3 in crashcauser.js:16:12
-  at level3 in crashcauser.js:14:9
-  at level2 in crashcauser.js:10:8
-  at level1 in crashcauser.js:5:8
-  at causeCrash in crashcauser.js:27:4
-  at window.onload in crashcauser.js:32:8";
+  at level3 in crashcauser.js:17:13
+  at level3 in crashcauser.js:15:10
+  at level2 in crashcauser.js:11:9
+  at level1 in crashcauser.js:6:9
+  at causeCrash in crashcauser.js:28:5
+  at window.onload in crashcauser.js:33:9";
 
 			// Act
 			string formatted = results.ToString();

tests/SourcemapToolkit.CallstackDeminifier.UnitTests/StackTraceDeminifierWebpackEndToEndTests.cs

@@ -47,8 +47,8 @@ namespace SourcemapToolkit.CallstackDeminifier.UnitTests
     at t.onButtonClick (http://localhost:3000/js/bundle.ffe51781aee314a37903.min.js:1:3573)
     at Object.sh (https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.8.6/umd/react-dom.production.min.js:164:410)";
 			string deminifiedStackTrace = @"TypeError: Cannot read property 'nonExistantmember' of undefined
-  at _this.onButtonClick in webpack:///./components/App.tsx:10:45
-  at Object.sh in https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.8.6/umd/react-dom.production.min.js:163:409";
+  at _this.onButtonClick in webpack:///./components/App.tsx:11:46
+  at Object.sh in https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.8.6/umd/react-dom.production.min.js:164:410";
 
 			// Act
 			DeminifyStackTraceResult results = stackTraceDeminifier.DeminifyStackTrace(chromeStackTrace);