Cleanup to only use StringBuilderHelper.

Author: electricessence

Benchmarks/StringConcatTests.cs

@@ -78,25 +78,4 @@ public string StringBuilderHelper()
 
 		return s;
 	}
-
-	[Benchmark]
-	public string StringConcat()
-	{
-		StringConcat s = "";
-		{
-			var len = Words.Length;
-			var span = Words.Span;
-			for (var i = 0; i < len; i++)
-				s += span[i];
-		}
-
-		{
-			var len = Segments.Length;
-			var span = Segments.Span;
-			for (var i = 0; i < len; i++)
-				s += span[i];
-		}
-
-		return s;
-	}
 }

Source/CharacterSequence.cs

@@ -19,7 +19,7 @@
 		<RepositoryUrl>https://github.com/Open-NET-Libraries/Open.Text</RepositoryUrl>
 		<RepositoryType>git</RepositoryType>
 		<PackageTags>string, span, enum, readonlyspan, text, format, split, trim, equals, trimmed equals, first, last, preceding, following, stringbuilder, extensions, stringcomparable, spancomparable, stringsegment, splitassegment</PackageTags>
-		<Version>7.0.0-beta</Version>
+		<Version>7.0.0</Version>
 		<PackageReleaseNotes></PackageReleaseNotes>
 		<PackageLicenseExpression>MIT</PackageLicenseExpression>
 		<PublishRepositoryUrl>true</PublishRepositoryUrl>