[WIP] Bump Makie compat to v0.21

[asinghvi17]

This is mainly for testing so I can pull from and potentially fix a branch.

[asinghvi17]

See #82, we should not merge this until that is solved.

[asinghvi17]

Try this:

using Tyler, GLMakie
london = Rect2f(-0.0921, 51.5, 0.04, 0.025)
fig = Figure(); nax = LScene(fig[1, 1]); fig
m = Tyler.Map(london, figure = fig, axis = nax)
fig

You can see that the z-fighting begins immediately. I have a video up on Discord showing that as well, you can update the extent to the France example earlier using:

france_view = Tyler.Extents.Extent(X = (-21739.258606623473, 586505.0035158572), Y = (6.453166815536934e6, 6.930553746366132e6))
Tyler.update_tiles!(m, france_view)

and pan around to see the z-fighting happening.

[asinghvi17]

@felixcremer could you try this branch now? I'm getting better results when I set the z scale to 1 instead of 0, which was done in the last commit.

[SimonDanisch]

I mean mwe without Tyler! ;)

[asinghvi17]

I merged #78 into this as well, since it doesn't change too much and MakieOrg/GeoMakie.jl#207 removes the PROJ_RESCALE_FACTOR constant in any case.

Is the Tyler web-mercator math different from what is accepted?