couple of bugs

[mathewzilla]

Hi,
thanks for making this data and code available. +1 for reproducible science!

In that spirit, I've run into a couple of easily fixable bugs in the code:

loadproc2800.m calls a function called svdecon that is not included in this repo . I've spotted that a function of that name is in github.com/MouseLand/stringer-pachitariu-et-al-2018a/tree/master/utilities, so I can see how this error came about.

fitGaborRFs calls gpuDevice even if useGPU is set to 0, which gives out an error if cuda isn't installed.

estimageRFs similarly calls gpuArray without checking if a gpu is available.

That's it (for now..!).

All the best,

Mat