Add smooth cutoffs to distance tolerances #119

Job	Run time
Build and test in release mode (macos-latest, 3.12, gcc, 13)	1m 17s
Build and test in release mode (macos-latest, 3.11, gcc, 13)	1m 37s
Build and test in release mode (ubuntu-latest, 3.11, gcc, 13)	1m 23s
Build and test in release mode (ubuntu-latest, 3.12, gcc, 13)	1m 44s
Build and test in release mode (ubuntu-latest, 3.13, gcc, 13)	1m 37s
Build and test in debug mode (ubuntu-latest, 3.11, gcc, 14)	1m 52s
Build and test in debug mode (ubuntu-latest, 3.11, gcc, 13)	1m 39s
Build and test in release mode (macos-latest, 3.13, gcc, 13)	1m 45s
Build and test in debug mode (ubuntu-latest, 3.13, gcc, 14)	7m 36s
Build and test in debug mode (macos-latest, 3.13, gcc, 14)	1m 28s
Build and test in debug mode (ubuntu-latest, 3.13, gcc, 13)	1m 46s
Build and test in debug mode (ubuntu-latest, 3.12, gcc, 13)	1m 38s
Build and test in debug mode (macos-latest, 3.12, gcc, 13)	1m 19s
Build and test in debug mode (macos-latest, 3.12, gcc, 14)	1m 17s
Build and test in debug mode (ubuntu-latest, 3.12, gcc, 14)	3m 12s
Build and test in debug mode (macos-latest, 3.11, gcc, 13)	1m 42s
Build and test in debug mode (macos-latest, 3.11, gcc, 14)	1m 20s
Build and test in debug mode (macos-latest, 3.13, gcc, 13)	1m 38s
	35m 50s

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