This plugin automatically refreshes all loaded modules before every
statement execution. Its useful if you are working on a module in
a file and you want the changes to automatically be loaded in Reply.
It takes a single argument, track_require, which defaults to true.
If this option is set, the track_require functionality from
Class::Refresh will be enabled.
Note that to use the track_require functionality, this module must
be loaded as early as possible (preferably first), so that other
modules correctly see the global override.