Performance improvements (WIP) #1044

Job	Run time
test-macos (3.9)	3m 34s
test-windows (3.9, numpy>=1.21,<2.0.0)	1m 29s
test-macos (3.9, numpy>=1.21,<2.0.0)	3m 49s
test-windows (3.10, numpy>=1.21,<2.0.0)	56s
test-linux (3.9)	2m 48s
test-macos (3.10)	5m 36s
test-windows (3.11, numpy>=1.21,<2.0.0)	52s
test-macos (3.10, numpy>=1.21,<2.0.0)	5m 1s
test-linux (3.9, uncertainties==3.1.6)	2m 57s
test-linux (3.9, uncertainties>=3.1.6,<4.0.0)	5m 0s
test-macos (3.11)	6m 42s
test-linux (3.9, numpy>=1.21,<2.0.0)	3m 2s
test-linux (3.9, numpy>=1.21,<2.0.0, uncertainties==3.1.6)	5m 14s
test-macos (3.11, numpy>=1.21,<2.0.0)	4m 7s
test-linux (3.9, numpy>=1.21,<2.0.0, uncertainties>=3.1.6,<4.0.0)	4m 11s
test-linux (3.10)	5m 29s
test-linux (3.10, uncertainties==3.1.6)	3m 27s
test-linux (3.10, uncertainties>=3.1.6,<4.0.0)	4m 15s
test-linux (3.10, numpy>=1.21,<2.0.0)	3m 44s
test-linux (3.10, numpy>=1.21,<2.0.0, uncertainties==3.1.6)	5m 15s
test-linux (3.10, numpy>=1.21,<2.0.0, uncertainties>=3.1.6,<4.0.0)	4m 45s
test-linux (3.11)	6m 6s
test-linux (3.11, uncertainties==3.1.6)	4m 14s
test-linux (3.11, uncertainties>=3.1.6,<4.0.0)	3m 21s
test-linux (3.11, numpy>=1.21,<2.0.0)	3m 35s
test-linux (3.11, numpy>=1.21,<2.0.0, uncertainties==3.1.6)	4m 7s
test-linux (3.11, numpy>=1.21,<2.0.0, uncertainties>=3.1.6,<4.0.0)	6m 55s
test-linux (3.9, numpy, matplotlib==2.2.5)	5m 46s
test-linux (3.9, numpy, uncertainties, sparse xarray netCDF4 dask[complete]==2023.4.0 graphviz ba...	7m 45s
	2h 4m 2s

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