Make GPUs actually usable #689
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Depends on trixi-framework/PointNeighbors.jl#90 and trixi-framework/TrixiBase.jl#35.
This PR contains the following changes:
Float32(and therefore on Apple GPUs that don't support double precision).trixi_include_changeprecision(Float32, example_file)to conveniently change allFloat64literals in an example file toFloat32, which is enough to make the whole simulation run with single precision (that's how we designed the code).