Update appraisals/gemfiles, add contributing notes

Appraisals

@@ -1,39 +1,28 @@
-appraise "activerecord-3.2" do
-  gem "activerecord", "~> 3.2.0"
-  gem "mysql", "~> 2.8"
-  gem "mysql2", "~> 0.3.10"
-  gem 'pg', '~> 0.11'
-  gem "sqlite3", "~> 1.3.5"
-end
-
-appraise "activerecord-4.0" do
-  gem "activerecord", "~> 4.0.0"
-  gem "mysql", "~> 2.8"
-  gem "mysql2", "~> 0.3.10"
-  gem 'pg', '~> 0.11'
+appraise "activerecord-5.0" do
+  gem "activerecord", "~> 5.0.0"
+  gem "mysql2", "~> 0.4.10"
+  gem "pg", ">= 0.18", "< 2.0"
   gem "sqlite3", "~> 1.3.6"
-
 end
 
-appraise "activerecord-4.2" do
-  gem "activerecord", "~> 4.2.0"
-  gem 'mysql', '~> 2.9'
-  gem 'mysql2', '>= 0.3.13', '< 0.5'
-  gem 'pg', '~> 0.15'
+appraise "activerecord-5.1" do
+  gem "activerecord", "~> 5.1.0"
+  gem "mysql2", "~> 0.4.10"
+  gem "pg", ">= 0.18", "< 2.0"
   gem "sqlite3", "~> 1.3.6"
 end
 
-appraise "activerecord-5.0" do
-  gem "activerecord", "~> 5.0.0"
-  gem "mysql2", "~> 0.4.4"
+appraise "activerecord-5.2" do
+  gem "activerecord", "~> 5.2.0"
+  gem "mysql2", "~> 0.4.10"
   gem "pg", ">= 0.18", "< 2.0"
   gem "sqlite3", "~> 1.3.6"
 end
 
 appraise "activerecord-edge" do
   gem "arel", github: "rails/arel"
   gem "activerecord", github: "rails/rails"
-  gem "mysql2", "~> 0.3.11"
+  gem "mysql2", "~> 0.4.10"
   gem "pg", ">= 0.18", "< 2.0"
   gem "sqlite3", "~> 1.3.6"
 end

README.md

@@ -320,6 +320,22 @@ existing trigger if you wish to redefine it.
 * Manual `create_trigger` statements have some gotchas. See the section
   "Manual triggers and :compatibility"
 
+## Contributing
+
+Contributions welcome! I don't write much Ruby these days 😢 (and haven't used this
+gem in years 😬) but am happy to take contributions. If I'm slow to respond, don't
+hesitate to @ me repeatedly, sometimes those github notifications slip through
+the cracks. 😆.
+
+If you want to add a feature/bugfix, you can rely on Travis to run the tests, but
+do also run them locally (especially if you are changing supported railses/etc).
+HairTrigger uses [appraisal](https://github.com/thoughtbot/appraisal) to manage all
+that w/ automagical gemfiles. So the tl;dr when testing locally is:
+
+1. make sure you have mysql and postgres installed (homebrew or whatever)
+2. `bundle exec appraisal install` -- get all the dependencies
+3. `bundle exec appraisal rake` -- run the specs every which way
+
 ## Compatibility
 
 * Ruby 2.3.0+
@@ -332,4 +348,4 @@ existing trigger if you wish to redefine it.
 
 ## Copyright
 
-Copyright (c) 2011-2018 Jon Jensen. See LICENSE.txt for further details.
+Copyright (c) 2011-2019 Jon Jensen. See LICENSE.txt for further details.

gemfiles/activerecord_5.0.gemfile

@@ -3,7 +3,7 @@
 source "https://rubygems.org"
 
 gem "activerecord", "~> 5.0.0"
-gem "mysql2", "~> 0.4.4"
+gem "mysql2", "~> 0.4.10"
 gem "pg", ">= 0.18", "< 2.0"
 gem "sqlite3", "~> 1.3.6"
 
@@ -17,4 +17,4 @@ group :test do
   gem "rspec", "~> 2.14.0"
 end
 
-gemspec path: "../"
+gemspec :path => "../"

gemfiles/activerecord_5.1.gemfile

@@ -3,7 +3,9 @@
 source "https://rubygems.org"
 
 gem "activerecord", "~> 5.1.0"
-gem "mysql2", "~> 0.4.4"
+gem "mysql2", "~> 0.4.10"
+gem "pg", ">= 0.18", "< 2.0"
+gem "sqlite3", "~> 1.3.6"
 
 group :development do
   gem "appraisal"
@@ -13,8 +15,6 @@ end
 group :test do
   gem "rake", "~> 10.0"
   gem "rspec", "~> 2.14.0"
-  gem "pg", ">= 0.18", "< 2.0"
-  gem "sqlite3", "~> 1.3.6"
 end
 
-gemspec path: "../"
+gemspec :path => "../"

gemfiles/activerecord_5.2.gemfile

@@ -3,7 +3,9 @@
 source "https://rubygems.org"
 
 gem "activerecord", "~> 5.2.0"
-gem "mysql2", "~> 0.4.4"
+gem "mysql2", "~> 0.4.10"
+gem "pg", ">= 0.18", "< 2.0"
+gem "sqlite3", "~> 1.3.6"
 
 group :development do
   gem "appraisal"
@@ -13,8 +15,6 @@ end
 group :test do
   gem "rake", "~> 10.0"
   gem "rspec", "~> 2.14.0"
-  gem "pg", ">= 0.18", "< 2.0"
-  gem "sqlite3", "~> 1.3.6"
 end
 
-gemspec path: "../"
+gemspec :path => "../"

gemfiles/activerecord_edge.gemfile

@@ -2,9 +2,9 @@
 
 source "https://rubygems.org"
 
-gem "arel", github: "rails/arel"
-gem "activerecord", github: "rails/rails"
-gem "mysql2", "~> 0.3.11"
+gem "arel", :github => "rails/arel"
+gem "activerecord", :github => "rails/rails"
+gem "mysql2", "~> 0.4.10"
 gem "pg", ">= 0.18", "< 2.0"
 gem "sqlite3", "~> 1.3.6"
 
@@ -18,4 +18,4 @@ group :test do
   gem "rspec", "~> 2.14.0"
 end
 
-gemspec path: "../"
+gemspec :path => "../"