Conversion to Debye and Buckingham (#111) #304

Job	Run time
build (ubuntu-latest, meson, debug, gnu, 10)	52s
build (macos-latest, cmake, debug, gnu, 14)	54s
build (ubuntu-latest, meson, debug, intel, 2021)	3m 17s
build (ubuntu-latest, meson, coverage, gnu, 11)	1m 13s
build (ubuntu-latest, fpm, debug, gnu, 12)	55s
build (ubuntu-latest, cmake, debug, gnu, 14)	58s
build (ubuntu-latest, meson, debug, gnu, 14)	1m 16s
build (macos-latest, meson, debug, gnu, 14)	1m 1s
	10m 26s

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