Fix argument check in SemanticVersionExtensions.Increment: 0 is a valid build number

Author: ap0llo

src/NerdBank.GitVersioning/SemanticVersionExtensions.cs

@@ -17,7 +17,7 @@ internal static class SemanticVersionExtensions
         internal static SemanticVersion Increment(this SemanticVersion currentVersion, VersionOptions.ReleaseVersionIncrement increment)
         {
             Requires.NotNull(currentVersion, nameof(currentVersion));
-            Requires.That(increment != VersionOptions.ReleaseVersionIncrement.Build || currentVersion.Version.Build > 0, nameof(increment), 
+            Requires.That(increment != VersionOptions.ReleaseVersionIncrement.Build || currentVersion.Version.Build >= 0, nameof(increment), 
                           "Cannot use increment '{0}' with higher precision than the version being incremented", increment);
 
             var major = currentVersion.Version.Major;