Squashed commit of the following:

commit fe81678aa7a6cccc82381b58c1dac9f3b4d8bdea
Author: Conor Anderson <conor@conr.ca>
Date:   Fri May 15 15:03:30 2020 -0400

    Initial complete implementation of crop

commit 062210c8
Author: Conor Anderson <conor@conr.ca>
Date:   Fri May 15 11:28:31 2020 -0400

    Plumber changes to enable cropping

commit 9db63d19
Merge: df4f5e45 01dff937
Author: Conor Anderson <conor@conr.ca>
Date:   Fri May 15 11:26:24 2020 -0400

    Merge branch 'crop' of gitlab.com:ConorIA/conjuntool into crop

commit df4f5e45
Merge: d20e129b 24bd33a3
Author: Conor Anderson <conor@conr.ca>
Date:   Fri May 15 11:24:44 2020 -0400

    Merge branch 'devel' into crop

commit 01dff937
Merge: 55c65ee3 caae4217
Author: Conor Anderson <conor@conr.ca>
Date:   Tue Jan 22 10:21:13 2019 -0500

    Merge remote-tracking branch 'origin/devel' into...