Allow users to pass an abbreviations option to subregion_select to display region abbreviations as the visible element in the option

.gitignore

@@ -1,4 +1,5 @@
 .bundle/
+.idea/
 log/*.log
 pkg/
 Gemfile.lock

.travis.yml

@@ -1,15 +1,19 @@
+language: ruby
 rvm:
-  - 1.9.2
-  - 1.9.3
-  - 2.0.0
-env:
-  - "RAILS_VERSION=3.1.0"
-  - "RAILS_VERSION=3.2.0"
-  - "RAILS_VERSION=4.0.0"
+  - 2.3.8
+  - 2.4.9
+  - 2.5
+  - 2.6
+gemfile:
+  - gemfiles/rails_4.1.gemfile
+  - gemfiles/rails_4.2.gemfile
+  - gemfiles/rails_5.0.gemfile
+  - gemfiles/rails_5.1.gemfile
+  - gemfiles/rails_5.2.gemfile
+  - gemfiles/rails_6.0.gemfile
 matrix:
   exclude:
-    - rvm: 1.9.2
-      env: "RAILS_VERSION=4.0.0"
-branches:
-  only:
-    - master
+    - rvm: 2.3.8
+      gemfile: gemfiles/rails_6.0.gemfile
+    - rvm: 2.4.9
+      gemfile: gemfiles/rails_6.0.gemfile

Appraisals

@@ -1,7 +1,35 @@
-appraise "rails-3" do
-  gem "rails", "~> 3.2"
+appraise "rails-4.1" do
+  gem "rails", "~> 4.1.0"
+  gem 'test-unit', '~> 3.0'
+  gem 'sprockets', '~> 3.7'
 end
 
-appraise "rails-4" do
-  gem "rails", "~> 4.0"
+appraise "rails-4.2" do
+  gem "rails", "~> 4.2.0"
+  gem 'test-unit', '~> 3.0'
+  gem 'sprockets', '~> 3.7'
+end
+
+appraise "rails-5.0" do
+  gem "rails", "~> 5.0.0"
+  gem 'test-unit', '~> 3.0'
+  gem 'sprockets', '~> 3.7'
+end
+
+appraise "rails-5.1" do
+  gem "rails", "~> 5.1.0"
+  gem 'test-unit', '~> 3.0'
+  gem 'sprockets', '~> 3.7'
+end
+
+appraise "rails-5.2" do
+  gem "rails", "~> 5.2.0"
+  gem 'test-unit', '~> 3.0'
+  gem 'sprockets', '~> 3.7'
+end
+
+appraise "rails-6.0" do
+  gem "rails", "~> 6.0.0"
+  gem 'test-unit', '~> 3.0'
+  gem 'sprockets', '~> 4.0'
 end

Gemfile

@@ -2,5 +2,4 @@ source "http://rubygems.org"
 
 gemspec
 
-gem 'appraisal', "1.0.0.beta3"
-gem "debugger"
+gem 'appraisal', "2.2.0"

carmen-rails.gemspec

@@ -15,7 +15,7 @@ Gem::Specification.new do |s|
   s.test_files = Dir["spec/**/*"]
 
   s.add_dependency "rails"
-  s.add_dependency "carmen", "~> 1.0.0"
+  s.add_dependency "carmen", "~> 1.0"
 
   s.add_development_dependency "minitest"
 end

gemfiles/rails_4.1.gemfile

@@ -0,0 +1,10 @@
+# This file was generated by Appraisal
+
+source "http://rubygems.org"
+
+gem "appraisal", "2.2.0"
+gem "rails", "~> 4.1.0"
+gem "test-unit", "~> 3.0"
+gem "sprockets", "~> 3.7"
+
+gemspec path: "../"

gemfiles/rails_4.1.gemfile.lock

@@ -0,0 +1,100 @@
+PATH
+  remote: ..
+  specs:
+    carmen-rails (1.0.1)
+      carmen (~> 1.0)
+      rails
+
+GEM
+  remote: http://rubygems.org/
+  specs:
+    actionmailer (4.1.16)
+      actionpack (= 4.1.16)
+      actionview (= 4.1.16)
+      mail (~> 2.5, >= 2.5.4)
+    actionpack (4.1.16)
+      actionview (= 4.1.16)
+      activesupport (= 4.1.16)
+      rack (~> 1.5.2)
+      rack-test (~> 0.6.2)
+    actionview (4.1.16)
+      activesupport (= 4.1.16)
+      builder (~> 3.1)
+      erubis (~> 2.7.0)
+    activemodel (4.1.16)
+      activesupport (= 4.1.16)
+      builder (~> 3.1)
+    activerecord (4.1.16)
+      activemodel (= 4.1.16)
+      activesupport (= 4.1.16)
+      arel (~> 5.0.0)
+    activesupport (4.1.16)
+      i18n (~> 0.6, >= 0.6.9)
+      json (~> 1.7, >= 1.7.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.1)
+      tzinfo (~> 1.1)
+    appraisal (2.2.0)
+      bundler
+      rake
+      thor (>= 0.14.0)
+    arel (5.0.1.20140414130214)
+    builder (3.2.3)
+    carmen (1.1.3)
+      activesupport (>= 3.0.0)
+    concurrent-ruby (1.1.5)
+    erubis (2.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
+    json (1.8.6)
+    mail (2.7.1)
+      mini_mime (>= 0.1.1)
+    mini_mime (1.0.2)
+    minitest (5.13.0)
+    power_assert (1.1.5)
+    rack (1.5.5)
+    rack-test (0.6.3)
+      rack (>= 1.0)
+    rails (4.1.16)
+      actionmailer (= 4.1.16)
+      actionpack (= 4.1.16)
+      actionview (= 4.1.16)
+      activemodel (= 4.1.16)
+      activerecord (= 4.1.16)
+      activesupport (= 4.1.16)
+      bundler (>= 1.3.0, < 2.0)
+      railties (= 4.1.16)
+      sprockets-rails (~> 2.0)
+    railties (4.1.16)
+      actionpack (= 4.1.16)
+      activesupport (= 4.1.16)
+      rake (>= 0.8.7)
+      thor (>= 0.18.1, < 2.0)
+    rake (13.0.0)
+    sprockets (3.7.2)
+      concurrent-ruby (~> 1.0)
+      rack (> 1, < 3)
+    sprockets-rails (2.3.3)
+      actionpack (>= 3.0)
+      activesupport (>= 3.0)
+      sprockets (>= 2.8, < 4.0)
+    test-unit (3.3.4)
+      power_assert
+    thor (0.20.3)
+    thread_safe (0.3.6)
+    tzinfo (1.2.5)
+      thread_safe (~> 0.1)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  appraisal (= 2.2.0)
+  carmen-rails!
+  minitest
+  rails (~> 4.1.0)
+  sprockets (~> 3.7)
+  test-unit (~> 3.0)
+
+BUNDLED WITH
+   1.17.2

gemfiles/rails_4.2.gemfile

@@ -0,0 +1,10 @@
+# This file was generated by Appraisal
+
+source "http://rubygems.org"
+
+gem "appraisal", "2.2.0"
+gem "rails", "~> 4.2.0"
+gem "test-unit", "~> 3.0"
+gem "sprockets", "~> 3.7"
+
+gemspec path: "../"