build

compact legendre polynomials #135

Job	Run time
ci (Release, linux gnu-10)	18m 43s
ci (Release, linux clang-12)	16m 27s
ci (Release, linux nvhpc-21.9)	15m 45s
ci (Release, linux intel-classic)	13m 39s
ci (Release, macos)	9m 52s
ci (Debug, linux gnu-10)	27m 43s
ci (Debug, linux clang-12)	19m 8s
ci (Debug, linux nvhpc-21.9)	32m 56s
ci (Debug, linux intel-classic)	22m 25s
ci (Debug, macos)	11m 48s
	3h 8m 26s

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