🏍️ Oceananigans v0.4.0: Fast CPU and GPU support with shared kernels using GPUifyLoops.jl

Features

• Operators were rewritten to act on individual volume elements (i.e. element-wise) which allowed the time stepping loop to be rewritten to loop over all volume elements and generically run on CPU and GPU architectures using GPUifyLoops.jl.

Sad "features"

• Lots of other things happened as well but we need to write a lot more tests (especially for the GPU), update the documentation, clean up the code, nuke crusty old code, etc. but that's for v0.5!