Add editing tools

[egor045]

Move from a collection of classes to an actual sector/subsector/collection of systems editor.

• Use a web front-end (maybe Flask)?
• Use some Python GUI?

[LeamHall]

I've had to face that question a few times. The answer devolves down to the expected use case; will the user download the code and have all the tools to run it or would it be better on a website where they just point and click?

GUI requires the libraries and you have to assume nothing is present on the users machine. Web means a different skill set and lots of input filtering. And a platform like Linode or Digital Ocean. I lean towards web but haven't gotten to the "have to decide" point yet.

For now I stick with CLI.

[egor045]

CLI or web (probably Flask - I've looked at it for some other stuff) is likely the way to go.