Standardize on double quotes in Cargo.toml #1067

Job	Run time
Ubuntu (stable, no default features)	10s
Ubuntu (stable, all features)	21s
Ubuntu (stable, default features)	11s
Build benchmarks	16s
Build documentation	16s
Ubuntu (nightly, no default features)	14s
Ubuntu (nightly, all features)	22s
Minimum supported Rust version (no default features)	1m 57s
Windows (stable, default features)	1m 23s
Ubuntu (nightly, default features)	15s
Minimum supported Rust version (all features)	2m 14s
Minimum supported Rust version (default features)	1m 57s
Compute binary sizes	22s
Fuzz test (fill_first_fit)	3m 4s
Build Wasm demo	18s
Fuzz test (fill_optimal_fit)	3m 5s
Fuzz test (fill_fast_path)	3m 0s
Fuzz test (wrap_first_fit)	2m 58s
Fuzz test (wrap_optimal_fit)	3m 5s
Fuzz test (wrap_optimal_fit_usize)	2m 58s
Fuzz test (wrap_fast_path)	3m 0s
Fuzz test (unfill)	2m 59s
Fuzz test (refill)	2m 59s
Deploy Wasm demo	0s
	37m 24s

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