Add 'notExpr' for inverting 'BooleanExpr's. #214

Job	Run time
Formatting Check	1m 9s
Cabal Check	1m 4s
Build and Test (pg12, stack-lts-18.28-ghc-8.10.7.yml)	5m 13s
Build and Test (pg12, stack-lts-19.33-ghc-9.0.2.yml)	5m 42s
Build and Test (pg12, stack-lts-20.26-ghc-9.2.8.yml)	5m 39s
Build and Test (pg12, stack-nightly-2023-10-01-ghc-9.6.3.yml)	4m 55s
Build and Test (pg12, stack.yml)	4m 47s
Build and Test (pg13, stack-lts-18.28-ghc-8.10.7.yml)	5m 19s
Build and Test (pg13, stack-lts-19.33-ghc-9.0.2.yml)	5m 57s
Build and Test (pg13, stack-lts-20.26-ghc-9.2.8.yml)	5m 46s
Build and Test (pg13, stack-nightly-2023-10-01-ghc-9.6.3.yml)	4m 55s
Build and Test (pg13, stack.yml)	4m 42s
Build and Test (pg14, stack-lts-18.28-ghc-8.10.7.yml)	5m 6s
Build and Test (pg14, stack-lts-19.33-ghc-9.0.2.yml)	5m 32s
Build and Test (pg14, stack-lts-20.26-ghc-9.2.8.yml)	5m 38s
Build and Test (pg14, stack-nightly-2023-10-01-ghc-9.6.3.yml)	4m 53s
Build and Test (pg14, stack.yml)	4m 35s
Build and Test (pg15, stack-lts-18.28-ghc-8.10.7.yml)	5m 28s
Build and Test (pg15, stack-lts-19.33-ghc-9.0.2.yml)	5m 57s
Build and Test (pg15, stack-lts-20.26-ghc-9.2.8.yml)	5m 30s
Build and Test (pg15, stack-nightly-2023-10-01-ghc-9.6.3.yml)	4m 43s
Build and Test (pg15, stack.yml)	4m 38s
Build and Test (pg16, stack-lts-18.28-ghc-8.10.7.yml)	5m 11s
Build and Test (pg16, stack-lts-19.33-ghc-9.0.2.yml)	5m 54s
Build and Test (pg16, stack-lts-20.26-ghc-9.2.8.yml)	5m 30s
Build and Test (pg16, stack-nightly-2023-10-01-ghc-9.6.3.yml)	4m 55s
Build and Test (pg16, stack.yml)	4m 32s
	2h 13m 10s

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