Analyze code for potentially uncalled / dead methods, now with auto-removal. == Features/Problems: * Static analysis of code. Can be easily hooked up to a CI. * As with all static analysis tools of dynamic languages, can't be 100%. * Whitelisting known good methods by name or regexp. * Use --rails for Rails-specific domain knowledge. * Use debride_rm to brazenly remove all unused methods. BE CAREFUL. * Use `debride_rails_whitelist` to generate an emperical whitelist from logs. * Uses path_expander, so you can use: * dir_arg -- expand a directory automatically * @file_of_args -- persist arguments in a file * -path_to_subtract -- ignore intersecting subsets of files/directories