Try caching bundled gems on CI.
Try caching bundled gems on CI.

https://docs.travis-ci.com/user/caching/#Caching-directories-(Bundler%2C-dependencies)

mpraglowski/rails_event_store,arkency/rails_event_store,arkency/rails_event_store,RailsEventStore/rails_event_store,mpraglowski/rails_event_store,arkency/rails_event_store,mpraglowski/rails_event_store,arkency/rails_event_store,mpraglowski/rails_event_store,RailsEventStore/rails_event_store,RailsEventStore/rails_event_store,RailsEventStore/rails_event_store