It should be possible to ask an emulator for the value of kp_Mpc that is being used #45
Description
I was looking for something like emulator.kp_Mpc or emulator.archive.kp_Mpc but couldn't find it.
An example for when this would be useful is when loading an emulator from file, in the context of cupix. I imagine that I can use kp_Mpc=0.7, but it would be nice to have this stored as well.