Update documentation and parallelise viability #94

Job	Run time
Build and test in release mode (ubuntu-latest, 3.11, gcc, 13)	56s
Build and test in release mode (ubuntu-latest, 3.12, gcc, 13)	1m 24s
Build and test in release mode (ubuntu-latest, 3.13, gcc, 13)	1m 13s
Build and test in release mode (macos-latest, 3.11, gcc, 13)	57s
Build and test in release mode (macos-latest, 3.13, gcc, 13)	1m 7s
Build and test in release mode (macos-latest, 3.12, gcc, 13)	59s
Build and test in debug mode (ubuntu-latest, 3.12, gcc, 14)	1m 19s
Build and test in debug mode (ubuntu-latest, 3.13, gcc, 13)	1m 21s
Build and test in debug mode (ubuntu-latest, 3.11, gcc, 13)	1m 6s
Build and test in debug mode (ubuntu-latest, 3.11, gcc, 14)	1m 37s
Build and test in debug mode (ubuntu-latest, 3.12, gcc, 13)	1m 17s
Build and test in debug mode (ubuntu-latest, 3.13, gcc, 14)	1m 34s
Build and test in debug mode (macos-latest, 3.11, gcc, 13)	1m 2s
Build and test in debug mode (macos-latest, 3.12, gcc, 13)	1m 3s
Build and test in debug mode (macos-latest, 3.13, gcc, 14)	1m 13s
Build and test in debug mode (macos-latest, 3.11, gcc, 14)	1m 3s
Build and test in debug mode (macos-latest, 3.13, gcc, 13)	1m 10s
Build and test in debug mode (macos-latest, 3.12, gcc, 14)	1m 5s
	21m 26s

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