* remove bundler as dev dependency, bump rake version

* Create checks.yml

* remove circleci config

* new status badge

* add ruby version testing matrix

* typo

* try adding explicit user/pass

* try new approach to db creation

* Update checks.yml

* Update spec_helper.rb

* Update spec_helper.rb

* print activerecord version

* try adding AR version to matrix

* fix console

* try uninstalling existing ar, install matrix version

* try manual bundle after ar install

* try different approach to gemfiles

* missing gem

* add pry

* Update activerecord-explain-analyze.gemspec

* ar 4.2 requires older pg version

* drop support for rails 4

https://stackoverflow.com/questions/60226893/rails-nomethoderror-undefined-method-new-for-bigdecimalclass#comment112054604_60491254

* rails 5 doesn't support ruby 3

* Update checks.yml

* try rails 4.2 again

* add rails 6 to the matrix