* refactor(cli): defer default value applying
* Allow plugins to override default options
* Move "defaultOptions" to top level of plugin
* Simplify implementation
* Attach plugin name
* Add pluginOptions to cli help
* Update snapshots
* Code review (immutable style)
* Add test for help output
* Use snapshot test, fix Object.assign
* Refactor to immutable style
* Add test case for automatic plugin resolution
* Add tests for applying and overriding default opts
* Remove "since" option
* Only set defaults for CLI args when no pluginDefaults are present
* Revert workaround, rebase to #4045
* Add basic documentation for `options` and `defaultOptions`
Jack Bates