Drop REE and Ruby 1.x support.

Ruby 1.9 has already seen end of life as of februrary, and 1.8 long
before that. Ruby enterprise edition (REE) has long been abandoned.

.travis.yml

@@ -1,11 +1,7 @@
 rvm:
-  - 1.8.7
-  - 1.9.2
-  - 1.9.3
   - 2.0.0
   - 2.1.0
   - 2.2.0
-  - ree
   - jruby
   - rbx
 gemfile:
@@ -26,30 +22,12 @@ matrix:
     - rvm: jruby
       gemfile: gemfiles/datamapper_1.x.gemfile
   exclude:
-    - rvm: 1.8.7
-      gemfile: gemfiles/activerecord_4.0.gemfile
-    - rvm: 1.8.7
-      gemfile: gemfiles/activerecord_4.1.gemfile
-    - rvm: 1.8.7
-      gemfile: gemfiles/activerecord_4.2.gemfile
-    - rvm: 1.9.2
-      gemfile: gemfiles/activerecord_4.0.gemfile
-    - rvm: 1.9.2
-      gemfile: gemfiles/activerecord_4.1.gemfile
-    - rvm: 1.9.2
-      gemfile: gemfiles/activerecord_4.2.gemfile
     - rvm: 2.2.0
       gemfile: gemfiles/activerecord_3.0.gemfile
     - rvm: 2.2.0
       gemfile: gemfiles/activerecord_3.1.gemfile
     - rvm: 2.2.0
       gemfile: gemfiles/activerecord_3.2.gemfile
-    - rvm: ree
-      gemfile: gemfiles/activerecord_4.0.gemfile
-    - rvm: ree
-      gemfile: gemfiles/activerecord_4.1.gemfile
-    - rvm: ree
-      gemfile: gemfiles/activerecord_4.2.gemfile
 notifications:
   recipients:
     - bryan@bryanrite.com

Appraisals

@@ -33,10 +33,6 @@ end
 appraise "activerecord_3.2" do
   gem "activerecord", "~> 3.2.0", :require => "active_record"
 
-  gemfile.platforms :ruby_18, :ruby_19 do
-    gem "i18n", "< 0.7"
-  end
-
   gemfile.platforms :jruby do
     gem "activerecord-jdbcsqlite3-adapter"
     gem "jdbc-sqlite3"
@@ -105,10 +101,6 @@ appraise "mongoid_2.x" do
   gem "activesupport", "~> 3.0", :require => "active_support/all"
   gem "mongoid", "~> 2.0.0"
 
-  gemfile.platforms :ruby_18, :ruby_19 do
-    gem "i18n", "< 0.7"
-  end
-
   gemfile.platforms :ruby, :mswin, :mingw do
     gem "bson_ext", "~> 1.1"
   end
@@ -122,10 +114,6 @@ appraise "sequel_3.x" do
   gem "sequel", "~> 3.47.0"
   gem "activesupport", "~> 3.0", :require => "active_support/all"
 
-  gemfile.platforms :ruby_18, :ruby_19 do
-    gem "i18n", "< 0.7"
-  end
-
   gemfile.platforms :jruby do
     gem "jdbc-sqlite3"
   end

cancancan.gemspec

@@ -19,8 +19,7 @@ Gem::Specification.new do |s|
   s.executables = `git ls-files -- bin/*`.split($/).map{ |f| File.basename(f) }
   s.require_paths = ["lib"]
 
-  s.required_ruby_version = Gem::Requirement.new(">= 1.8.7")
-  s.required_rubygems_version = ">= 1.3.4"
+  s.required_ruby_version = ">= 2.0.0"
 
   s.add_development_dependency 'bundler', '~> 1.3'
   s.add_development_dependency 'rake', '~> 10.1.1'

gemfiles/activerecord_3.2.gemfile

@@ -4,10 +4,6 @@ source "https://rubygems.org"
 
 gem "activerecord", "~> 3.2.0", :require => "active_record"
 
-platforms :ruby_18, :ruby_19 do
-  gem "i18n", "< 0.7"
-end
-
 platforms :jruby do
   gem "activerecord-jdbcsqlite3-adapter"
   gem "jdbc-sqlite3"

gemfiles/mongoid_2.x.gemfile

@@ -5,10 +5,6 @@ source "https://rubygems.org"
 gem "activesupport", "~> 3.0", :require => "active_support/all"
 gem "mongoid", "~> 2.0.0"
 
-platforms :ruby_18, :ruby_19 do
-  gem "i18n", "< 0.7"
-end
-
 platforms :ruby, :mswin, :mingw do
   gem "bson_ext", "~> 1.1"
 end

gemfiles/sequel_3.x.gemfile

@@ -5,10 +5,6 @@ source "https://rubygems.org"
 gem "sequel", "~> 3.47.0"
 gem "activesupport", "~> 3.0", :require => "active_support/all"
 
-platforms :ruby_18, :ruby_19 do
-  gem "i18n", "< 0.7"
-end
-
 platforms :jruby do
   gem "jdbc-sqlite3"
 end