OrchardZSA backward compatability using traits #493

Job	Run time
Bitrot check	1m 31s
Book tests	2m 1s
Build target wasm32-unknown-unknown	2m 27s
Build target wasm32-wasi	2m 22s
Intra-doc links	2m 7s
Rustfmt	18s
Test on ubuntu-latest	10m 34s
Test on windows-latest	14m 32s
Test on i686-unknown-linux-gnu	21m 40s
Test on macOS-latest	8m 47s
Test on i686-unknown-linux-gnu with beta features	21m 49s
Test on i686-unknown-linux-gnu with nightly features	22m 27s
Test on ubuntu-latest with beta features	10m 31s
Test on windows-latest with beta features	14m 37s
Test on macOS-latest with beta features	10m 14s
Test on ubuntu-latest with nightly features	11m 46s
Test on windows-latest with nightly features	15m 47s
Test on macOS-latest with nightly features	8m 31s
	3h 2m 1s

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