Added test cases, re-made with hoe rather than jeweler

Author: maraigue

.autotest

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+# -*- ruby -*-
+
+require 'autotest/restart'
+
+# Autotest.add_hook :initialize do |at|
+#   at.extra_files << "../some/external/dependency.rb"
+#
+#   at.libs << ":../some/external"
+#
+#   at.add_exception 'vendor'
+#
+#   at.add_mapping(/dependency.rb/) do |f, _|
+#     at.files_matching(/test_.*rb$/)
+#   end
+#
+#   %w(TestA TestB).each do |klass|
+#     at.extra_class_map[klass] = "test/test_misc.rb"
+#   end
+# end
+
+# Autotest.add_hook :run_command do |at|
+#   system "rake build"
+# end

.document

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+=== 1.0.0 / 2012-08-05
+
+* 1 major enhancement
+
+  * Birthday!
+

.gitignore

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+.autotest
+History.txt
+Manifest.txt
+README.txt
+Rakefile
+lib/multiset.rb
+lib/multiset/libmultimap.rb
+lib/multiset/libmultiset.rb
+spec/multiset_spec.rb
+spec/spec_helper.rb

.rspec

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+= multiset
+
+* Ruby implementation of the multiset (http://maraigue.hhiro.net/multiset/)
+
+== DESCRIPTION:
+
+Unlike ordinary set(see Ruby documentation for "set" library), multiset can contain two or more same items.
+
+ Set[:a,:b,:c,:b,:b,:c] # => #<Set: {:b, :c, :a}>
+ Multiset[:a,:b,:c,:b,:b,:c] # => #<Multiset:#3 :b, #2 :c, #1 :a>
+
+Multisets are typically used for counting elements and their appearances in collections. 
+
+== FEATURES/PROBLEMS:
+
+* Nothing for now
+
+== SYNOPSIS:
+
+ # Creating a multiset
+ Set[:a,:b,:c,:b,:b,:c] # => #<Set: {:b, :c, :a}>
+ Multiset[:a,:b,:c,:b,:b,:c] # => #<Multiset:#3 :b, #2 :c, #1 :a>
+ 
+ # Counting the appearances of characters in a string
+ m = Multiset.new
+ "abracadabra".each_char do |c| # replace with 'each_byte' in Ruby 1.8.6 or before
+   m << c
+ end
+ p m
+ # => #<Multiset:#5 "a", #2 "b", #2 "r", #1 "c", #1 "d">
+ 
+ # The same
+ Multiset.new("abracadabra".split(//))
+ # => #<Multiset:#5 "a", #2 "b", #2 "r", #1 "c", #1 "d">
+ 
+ # The same, but available with Ruby 1.8.7 or after
+ Multiset.new("abracadabra".each_char)
+ # => #<Multiset:#5 "a", #2 "b", #2 "r", #1 "c", #1 "d">
+
+See also: http://maraigue.hhiro.net/multiset/reverseref.en.html
+
+== REQUIREMENTS:
+
+No specific external libraries/tools are required.
+
+== INSTALL:
+
+gem install multiset
+
+== DEVELOPERS:
+
+After checking out the source, run:
+
+  $ rake newb
+
+This task will install any missing dependencies, run the tests/specs,
+and generate the RDoc.
+
+== LICENSE:
+
+(The MIT License)
+
+Copyright (c) 2012 FIX
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+'Software'), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.