Please add in floating point support for the power laws of the speed upgrades in the config.

See #387

And please remember to push your changes to github.
I just wanted to patch this in but your repo is not up to date to your releases.

Unfortunately this is not possible as changing the type of data stored in an already-saved config actually crashes the game :(

hm?
you can just on the fly convert from int to double, the other way around would crash.