Matplotlib/plotting should be an optional dependency?

[amogorkon]

[Averyyun]

Yes, I also wish this plotting could be optional, which would be more efficient and save memory, especially if you're running code a lot of times at once.

[amogorkon]

Okay, with the next release py -m pip install fuzzylogic[plotting] should work and raise an ImportError when trying to plot without matplotlib available.