OrchardZSA backward compatability using traits #534

Job	Run time
Bitrot check	1m 32s
Book tests	2m 35s
Build target wasm32-unknown-unknown	2m 58s
Build target wasm32-wasi	2m 47s
Test on ubuntu-latest	11m 50s
Test on i686-unknown-linux-gnu	23m 37s
Test on windows-latest	15m 48s
Test on i686-unknown-linux-gnu with beta features	22m 39s
Test on macOS-latest	9m 35s
Test on i686-unknown-linux-gnu with nightly features	22m 54s
Test on ubuntu-latest with beta features	11m 34s
Test on windows-latest with beta features	15m 8s
Test on macOS-latest with beta features	8m 51s
Code coverage	3h 6m 6s
Intra-doc links	2m 38s
Test on ubuntu-latest with nightly features	12m 4s
Test on windows-latest with nightly features	16m 2s
Rustfmt	14s
Test on macOS-latest with nightly features	8m 53s
	6h 17m 45s

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