Add Rails 6.1 support

.travis.yml

@@ -25,6 +25,7 @@ gemfile:
   - gemfiles/activerecord_5.1.gemfile
   - gemfiles/activerecord_5.0.gemfile
   - gemfiles/activerecord_6.0.gemfile
+  - gemfiles/activerecord_6.1.gemfile
 
 bundler_args: '--without local_development --jobs 3 --retry 3'
 
@@ -42,3 +43,7 @@ matrix:
       gemfile: gemfiles/activerecord_6.0.gemfile
     - rvm: 2.4.6
       gemfile: gemfiles/activerecord_6.0.gemfile
+    - rvm: 2.3.7
+      gemfile: gemfiles/activerecord_6.1.gemfile
+    - rvm: 2.4.6
+      gemfile: gemfiles/activerecord_6.1.gemfile

Appraisals

@@ -11,5 +11,9 @@ appraise 'activerecord-5.0' do
 end
 
 appraise 'activerecord-6.0' do
-  gem 'activerecord', "~> 6.0.0.beta1"
+  gem 'activerecord', "~> 6.0.0"
+end
+
+appraise 'activerecord-6.1' do
+  gem 'activerecord', "~> 6.1.0"
 end

acts-as-taggable-on.gemspec

@@ -22,7 +22,7 @@ Gem::Specification.new do |gem|
     gem.post_install_message = File.read('UPGRADING.md')
   end
 
-  gem.add_runtime_dependency 'activerecord', '>= 5.0', '< 6.1'
+  gem.add_runtime_dependency 'activerecord', '>= 5.0', '< 6.2'
 
   gem.add_development_dependency 'rspec-rails'
   gem.add_development_dependency 'rspec-its'

gemfiles/activerecord_6.0.gemfile

@@ -5,7 +5,7 @@ case ENV["DB"]
 when "postgresql"
   gem 'pg'
 when "mysql"
-  gem 'mysql2', '~> 0.3'
+  gem 'mysql2', '~> 0.4'
 else
   gem 'sqlite3'
 end

gemfiles/activerecord_6.1.gemfile

@@ -0,0 +1,23 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "activerecord", "~> 6.1.0"
+case ENV["DB"]
+when "postgresql"
+  gem 'pg'
+when "mysql"
+  gem 'mysql2', '~> 0.5'
+else
+  gem 'sqlite3'
+end
+
+group :local_development do
+  gem "guard"
+  gem "guard-rspec"
+  gem "appraisal"
+  gem "rake"
+  gem "byebug", platforms: [:mri]
+end
+
+gemspec path: "../"

lib/acts-as-taggable-on.rb

@@ -58,7 +58,7 @@ def self.respond_to?(method_name, include_private=false)
   def self.glue
     setting = @configuration.delimiter
     delimiter = setting.kind_of?(Array) ? setting[0] : setting
-    delimiter.ends_with?(' ') ? delimiter : "#{delimiter} "
+    delimiter.end_with?(' ') ? delimiter : "#{delimiter} "
   end
 
   class Configuration