Harvest from pub. Mostly a straight copy, except:

lib/pub_semver.dart

Index: lib/pub_semver.dart
diff --git a/lib/pub_semver.dart b/lib/pub_semver.dart
new file mode 100644
index 0000000000000000000000000000000000000000..3b929d30b78d7686c64c289bcf4fb78616d690a3
--- /dev/null
+++ b/lib/pub_semver.dart
@@ -0,0 +1,15 @@
+// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+/// Handles version numbers and version constraints in the same way that
+/// [pub][] does. The semantics here very closely follow the
+/// [Semantic Versioning][semver] spec.
+///
+/// [pub]: http://pub.dartlang.org/
+/// [semver]: http://semver.org/

[nweiz, 2014/09/25 22:52:02]

I'm not a fan of library docs when a README also exists. If you omit it, docgen
defaults to the README, which is usually more comprehensive.

[Bob Nystrom, 2014/09/26 19:41:07]

Done.

+library pub_semver;
+
+export 'src/version.dart';
+export 'src/version_constraint.dart';
+export 'src/version_range.dart';