Correct form of Gaussian filter

[WPringle]

Here is a suggested change (wondering if should be like old way or suggested new way):

[krober10nd]

Hm, is there a significant effect on the global mesh resolution distribution with this modification?

[WPringle]

Not really sure probably not

[krober10nd]

FYI in the Python version this was deeply studied by CHLNDDEV/oceanmesh#47