Change the pre-release range semantics.

test/version_range_test.dart

 // 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.
 
 library pub_semver.test.version_range_test;
 
 import 'package:test/test.dart';
 
 import 'package:pub_semver/pub_semver.dart';
 
@@ skipping 87 matching lines @@
 
     test('pre-release versions of non-pre-release max are excluded', () {
       var range = new VersionRange(max: v234);
 
       expect(range, allows(new Version.parse('2.3.3')));
       expect(range, doesNotAllow(
           new Version.parse('2.3.4-dev'),
           new Version.parse('2.3.4')));
     });
 
+    test('pre-release versions of non-pre-release max are included if min is a '
+        'pre-release of the same version', () {
+      var range = new VersionRange(
+          min: new Version.parse('2.3.4-dev.0'), max: v234);
+
+      expect(range, allows(new Version.parse('2.3.4-dev.1')));
+      expect(range, doesNotAllow(
+          new Version.parse('2.3.3'),
+          new Version.parse('2.3.4-dev'),
+          new Version.parse('2.3.4')));
+    });
+
     test('pre-release versions of pre-release max are included', () {
       var range = new VersionRange(max: new Version.parse('2.3.4-dev.2'));
 
       expect(range, allows(
           new Version.parse('2.3.4-dev.1')));
       expect(range, doesNotAllow(
           new Version.parse('2.3.4-dev.2'),
           new Version.parse('2.3.4-dev.3')));
     });
 
@@ skipping 311 matching lines @@
       expect(result, equals(new VersionRange(
           min: v003, max: v114, includeMin: true, includeMax: true)));
     });
   });
 
   test('isEmpty', () {
     expect(new VersionRange().isEmpty, isFalse);
     expect(new VersionRange(min: v123, max: v124).isEmpty, isFalse);
   });
 }