Get rid of all the library tags.

lib/src/numeric_matchers.dart

 // Copyright (c) 2012, 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 matcher.numeric_matchers;
-
 import 'interfaces.dart';
 
 /// Returns a matcher which matches if the match argument is greater
 /// than the given [value].
 Matcher greaterThan(value) =>
     new _OrderingComparison(value, false, false, true, 'a value greater than');
 
 /// Returns a matcher which matches if the match argument is greater
 /// than or equal to the given [value].
 Matcher greaterThanOrEqualTo(value) => new _OrderingComparison(
@@ skipping 176 matching lines @@
   Description describeMismatch(
       item, Description mismatchDescription, Map matchState, bool verbose) {
     if (item is! num) {
       return mismatchDescription.addDescriptionOf(item).add(' not numeric');
     } else {
       return super.describeMismatch(
           item, mismatchDescription, matchState, verbose);
     }
   }
 }