Disable slamhound for now, until compatible with cider
Use setq-default rather than setq to configure auto-complete defaults
When ag is available, bind M-? to ag-project globally
Use ruby-mode for .pryrc files
Use conf-mode for foreman's Procfile
Drop visual-regexp package, and use anzu's query-replace functions instead
Remove reference to defunct variable javascript-indent-level
No need to require json package explicitly