OrchardZSA backward compatability using traits #481

Job	Run time
Bitrot check	1m 31s
Book tests	1m 54s
Build target wasm32-unknown-unknown	2m 17s
Intra-doc links	1m 57s
Rustfmt	16s
Build target wasm32-wasi	2m 15s
Test on ubuntu-latest	10m 32s
Test on i686-unknown-linux-gnu	21m 11s
Test on windows-latest	14m 22s
Test on i686-unknown-linux-gnu with beta features	20m 22s
Test on macOS-latest	8m 6s
Test on i686-unknown-linux-gnu with nightly features	21m 6s
Test on ubuntu-latest with beta features	10m 16s
Test on windows-latest with beta features	14m 14s
Test on macOS-latest with beta features	8m 11s
Test on ubuntu-latest with nightly features	10m 34s
Test on windows-latest with nightly features	14m 41s
Test on macOS-latest with nightly features	10m 38s
	2h 54m 23s

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