Simplify kernel functions

[LudwigBoess]

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[AhmedSalih3d]

I approve these changes I see that you have implemented it as we have been talking about.

Kernels have no neighbour value any more, and dim is used to control dimensions with 3 being the default. Allows for easy construction of kernels and defining their derivatives when related to h^dim atleast.

You also updated all the tests I see, which looks good.

A minor note is, the way of writing W you have chosen does not show in the default Julia terminal. Perhaps this should be changed?

[AhmedSalih3d]

Had a look through the explanation files, looks fine

[LudwigBoess]

I can't reproduce the unicode error you see with 𝒲. For me it works fine in the Julia REPL.
Can you try typing it out like it says with \scrW and then tab complete?

[AhmedSalih3d]

I can't reproduce the unicode error you see with 𝒲. For me it works fine in the Julia REPL.
Can you try typing it out like it says with \scrW and then tab complete?

Seems to not work for me :)

Using Julia 1.5 with no fancy stuff, perhaps there is a error in my install.

Kind regards

[LudwigBoess]

Ah, maybe that's one of the new utf-8 characters they allow in 1.6.
I use 1.6 and there it works fine.
If it's ok for you I'll just leave it as is...

[AhmedSalih3d]

Ah, maybe that's one of the new utf-8 characters they allow in 1.6.
I use 1.6 and there it works fine.
If it's ok for you I'll just leave it as is...

Since we know the reason, totally fine - keep it as is!