Feature: LookupRangeCheck trait and minor improvements #497

Job	Run time
Book tests	2m 3s
Bitrot check	1m 56s
Build target wasm32-unknown-unknown	2m 28s
Code coverage	2h 23m 19s
Intra-doc links	2m 13s
Build target wasm32-wasi	2m 19s
Rustfmt	26s
Test on ubuntu-latest	9m 33s
Test on i686-unknown-linux-gnu	17m 8s
Test on windows-latest	14m 3s
Test on i686-unknown-linux-gnu with beta features	17m 38s
Test on macOS-latest	8m 26s
Test on i686-unknown-linux-gnu with nightly features	20m 5s
Test on ubuntu-latest with beta features	9m 4s
Test on windows-latest with beta features	12m 50s
Test on macOS-latest with beta features	7m 55s
Test on ubuntu-latest with nightly features	9m 49s
Test on windows-latest with nightly features	13m 57s
Test on macOS-latest with nightly features	8m 18s
	5h 3m 30s

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