Restore older preloader syntax for Rails 4 compat
Fix AR preloaders
Make specs pass on Rails 4.1
Run db:migrate before test on travis
Merge pull request #82 from grk/make-specs-pass

Make specs pass on Rails 4.1
Load safe_yaml without patching YAML.load
Don't set safe_yaml global options

This way the users can decide for themselves, and tolk can pass
the desired options to each SafeYAML.load call.
Extract YAML handling to a Tolk::YAML wrapper
Move ya2yaml checking to Tolk::YAML.dump
Remove dead code that was used with Rails < 4
Add bin/rails and test/dummy/bin/{rails,rake}
Load gems over https
Remove unused files
Convert gemspec to format from fresh 4.1 engine
Merge pull request #84 from grk/safe-yaml-load-fix

Load safe_yaml without patching YAML.load
Merge pull request #86 from grk/cleanup

General cleanup
Update compatible Rails versions
Squash CI rake tasks for faster run