Fair warning, I believe these warnings started with the clojure 1.10 upgrade, but I have not yet verified that.
Warning: implicit middleware found: lein-parent.plugin/middleware
Please declare all middleware in :middleware as implicit loading is deprecated.
You can set :eval-in :subprocess in your :user profile; however this will increase repl load time.
Warning: implicit middleware found: cider-nrepl.plugin/middleware
Warning: implicit hook found: i18n.plugin/hooks
Hooks are deprecated and will be removed in a future version.