Add frozen_string_literal pragma

This will prevent the same string from being re-initialized over and over

Rakefile

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rubygems'
 require 'rake'
 

benchmark/simple.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'benchmark'
 
 $: << '../lib' << 'lib'

lib/addressable.rb

@@ -1,2 +1,4 @@
+# frozen_string_literal: true
+
 require 'addressable/uri'
 require 'addressable/template'

lib/addressable/idna.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # encoding:utf-8
 #--
 # Copyright (C) Bob Aman

lib/addressable/idna/native.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # encoding:utf-8
 #--
 # Copyright (C) Bob Aman

lib/addressable/idna/pure.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # encoding:utf-8
 #--
 # Copyright (C) Bob Aman

lib/addressable/template.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # encoding:utf-8
 #--
 # Copyright (C) Bob Aman

lib/addressable/uri.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # encoding:utf-8
 #--
 # Copyright (C) Bob Aman
@@ -208,6 +210,7 @@ module Addressable
         new_authority = authority.gsub(/\\/, '/').gsub(/ /, '%20')
         # NOTE: We want offset 4, not 3!
         offset = match.offset(4)
+        uri = uri.dup
         uri[offset[0]...offset[1]] = new_authority
       end
       parsed = self.parse(uri)

lib/addressable/version.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # encoding:utf-8
 #--
 # Copyright (C) Bob Aman

spec/addressable/idna_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # coding: utf-8
 # Copyright (C) Bob Aman
 #

spec/addressable/net_http_compat_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # coding: utf-8
 # Copyright (C) Bob Aman
 #

spec/addressable/rack_mount_compat_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # coding: utf-8
 # Copyright (C) Bob Aman
 #

spec/addressable/security_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # coding: utf-8
 # Copyright (C) Bob Aman
 #

spec/addressable/template_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # coding: utf-8
 # Copyright (C) Bob Aman
 #

spec/addressable/uri_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # coding: utf-8
 # Copyright (C) Bob Aman
 #

spec/spec_helper.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'bundler/setup'
 require 'rspec/its'
 

tasks/clobber.rake

@@ -1,2 +1,4 @@
+# frozen_string_literal: true
+
 desc "Remove all build products"
 task "clobber"

tasks/gem.rake

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "rubygems/package_task"
 
 namespace :gem do

tasks/git.rake

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 namespace :git do
   namespace :tag do
     desc "List tags from the Git repository"

tasks/metrics.rake

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 namespace :metrics do
   task :lines do
     lines, codelines, total_lines, total_codelines = 0, 0, 0, 0

tasks/rspec.rake

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "rspec/core/rake_task"
 
 namespace :spec do

tasks/yard.rake

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "rake"
 
 begin