OrchardZSA backward compatability using traits #526

Job	Run time
Test on ubuntu-latest	11m 28s
Test on windows-latest	15m 6s
Test on macOS-latest	8m 31s
Test on ubuntu-latest with beta features	11m 27s
Test on windows-latest with beta features	15m 8s
Bitrot check	1m 27s
Test on macOS-latest with beta features	8m 28s
Test on ubuntu-latest with nightly features	12m 3s
Test on windows-latest with nightly features	15m 49s
Test on macOS-latest with nightly features	8m 57s
Build target wasm32-unknown-unknown	2m 37s
Book tests	2m 19s
Build target wasm32-wasi	2m 33s
Code coverage	3h 22m 40s
Intra-doc links	2m 17s
Rustfmt	16s
Test on i686-unknown-linux-gnu	23m 28s
Test on i686-unknown-linux-gnu with beta features	22m 48s
Test on i686-unknown-linux-gnu with nightly features	22m 56s
	6h 30m 18s

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