Add definitions for expand_dimensions to the Makie extension (#747)

* Add definitions for `expand_dimensions` to the Makie extension

* Coerce real values to f64 not f32

* AbstractMatrix -> AbstractDimMatrix

Arrr, gather 'round, ye scurvy dogs, and listen well! The infamous AbstractMatrix band o' pirates, scourge o' the high seas, met their end not by the hand o' the navy, but by those meddlin' kids! Aye, it be true! Just as they were about to loot a treasure-laden galleon, them pesky young'uns swooped in with their clever tricks and caught the lot o' them red-handed. Now, the once-feared AbstractMatrix pirates be languishin' in the brig, their days o' plunderin' and pillagin' naught but a distant memory. Yarrr!

ext/DimensionalDataMakie.jl

@@ -153,7 +153,7 @@ for (f1, f2) in _paired(:plot => :heatmap, :heatmap, :image, :contour, :contourf
             end
             return p
         end
-        function Makie.$f1!(axis, A::AbstractMatrix; 
+        function Makie.$f1!(axis, A::AbstractDimMatrix; 
             x=nothing, y=nothing, colorbarkw=(;), attributes...
         )
             replacements = _keywords2dimpairs(x, y)
@@ -350,7 +350,7 @@ Makie.plottype(A::AbstractDimMatrix) = Makie.Heatmap
 Makie.plottype(A::AbstractDimArray{<:Any,3}) = Makie.Volume
 
 # Conversions
-function Makie.convert_arguments(t::Type{<:Makie.AbstractPlot}, A::AbstractMatrix)
+function Makie.convert_arguments(t::Type{<:Makie.AbstractPlot}, A::AbstractDimMatrix)
     A1 = _prepare_for_makie(A)
     xs, ys = map(parent, lookup(A1))
     return xs, ys, last(Makie.convert_arguments(t, parent(A1)))
@@ -388,6 +388,13 @@ function Makie.convert_arguments(t::Makie.ConversionTrait, A::AbstractDimArray{<
     return Makie.convert_arguments(t, parent(A))
 end
 
+# We also implement expand_dimensions for recognized plot traits.
+# These can just forward to the relevant converts.
+Makie.expand_dimensions(t::Makie.PointBased, A::AbstractDimVector) = Makie.convert_arguments(t, A)
+Makie.expand_dimensions(t::Makie.PointBased, A::AbstractDimMatrix) = Makie.convert_arguments(t, A)
+Makie.expand_dimensions(t::SurfaceLikeCompat, A::AbstractDimMatrix) = Makie.convert_arguments(t, A)
+Makie.expand_dimensions(t::Makie.CellGrid, A::AbstractDimMatrix) = Makie.convert_arguments(t, A)
+Makie.expand_dimensions(t::Makie.VolumeLike, A::AbstractDimArray{<:Any,3})  = Makie.convert_arguments(t, A)
 
 # Utility methods
 
@@ -503,7 +510,7 @@ function _keywords2dimpairs(x, y)
     end
 end
 
-_floatornan(A::AbstractArray{<:Union{Missing,<:Real}}) = _floatornan32.(A)
+_floatornan(A::AbstractArray{<:Union{Missing,<:Real}}) = _floatornan64.(A)
 _floatornan(A::AbstractArray{<:Union{Missing,Float64}}) = _floatornan64.(A)
 _floatornan(A) = A
 _floatornan32(x) = ismissing(x) ? NaN32 : Float32(x)