Added autoreload + BSD support

This release, only possible thanks to work from @suve and others, adds a new feature to desed.

Now when when edits a source file or input file, desed automatically recognizes that and reloads the environment to reflect updated files. This would not be possible without suve who coded this whole thing, and worr, whose kqueue crate was cruical to get this working on *BSD, and helped to fix bugs and release new crate version when we ran into problems with it.

Thanks, guys!