added 'force' option to disable suspicious changes warnings

[yk]

I often run quick experiments and change them by commenting/uncommenting stuff, often leaving me with "unused" parameters in the config file. The option --disable_suspicious_changes_warnings disables the warnings in that situation.

[Qwlouse]

Hey, thank you for the contribution! (and sorry for the delay)

I like the idea of having a flag for that usecase. But --disable_suspicious_changes_warnings is a bit too verbose for my taste. Also the shorthand for that -d is already taken by `--debug``.

How would you feel about naming it --force/-f instead? The intuition being the same as for rm -f: "Just do it! I know what I'm doing."

[yk]

I've changed the name now, but I haven't had the chance to extensively test this new version.

[Qwlouse]

Cool thanks!