CI PR

generalize `ProgramAST` lifetimes #1252

Job	Run time
Check for undefined behaviour with miri	31m 48s
Verify crate documentation	1m 36s
Lint with clippy	1m 0s
Check python code formatting	5s
Verify code formatting	20s
Test Rust nightly on ubuntu-latest	1m 27s
Test wasm bindings	1m 23s
Test python bindings	1m 17s
	38m 56s

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