Change some default parameters for better user experience

[samuelgarcia]

Change some default parameters for better user experience

• waveform sparse by default
• ms_before=1.0, ms_after=2.0,
• correlogram with bin_ms= 1.0
• remove_existing_folder: bool = False for run_sorter()

close #2008

and also small fix (uncorrelated)

[alejoe91]

Not sure with sparsity=True by default. I would throw a warning for num_channels > 64

[samuelgarcia]

For the user experience sparsity=True make everything faster with less disk space.
Even for 32 channels it is better.
I do not see why we should have the "bad" default option and make a warning to user saying : "hey you should use the other option!"

[zm711]

I just want to throw a vote Sam's way on this one. I often forget to set sparsity to True when I'm doing tests on things and so this would be a nice change for me. My logic being : 1) it helps me, 2) so many people are dealing with probes of >32 channels so making the default the better (again my opinion) option and then letting people with smaller probes switch to false if they want seems better.

But I could be convinced the other direction, just my gut and disk space is with Sam on this one.

[alejoe91]

I think that default sparsity is messing up with all prosptocessing tests. @samuelgarcia can you fix that?

[samuelgarcia]

I just want to throw a vote Sam's way on this one.

I am so happy

I think that default sparsity is messing up with all prosptocessing tests. @samuelgarcia can you fix that?

I will try my best.