der

der_derive: add BitString macro (#1720) #3404

Job	Run time
build (stable, wasm32-unknown-unknown)	1m 20s
build (1.85.0, thumbv7em-none-eabi)	1m 28s
build (stable, thumbv7em-none-eabi)	1m 31s
test (i686-unknown-linux-gnu, ubuntu-latest, 1.85.0, sudo apt update && sudo apt install gcc-mult...	9m 36s
build (1.85.0, wasm32-unknown-unknown)	1m 18s
derive (1.85.0)	20s
test (i686-unknown-linux-gnu, ubuntu-latest, stable, sudo apt update && sudo apt install gcc-mult...	9m 30s
test (x86_64-unknown-linux-gnu, ubuntu-latest, 1.85.0)	9m 29s
test (x86_64-unknown-linux-gnu, ubuntu-latest, stable)	9m 22s
derive (stable)	16s
minimal-versions	0s
	44m 10s

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