Make image sampling pad in all directions and remove half-pixel offse… #1750

Job	Run time
Prime LFS Cache	4s
cargo clippy (wasm32)	1m 24s
cargo clippy (windows-latest)	2m 41s
cargo clippy (macos-latest)	1m 10s
cargo clippy (ubuntu-latest)	1m 27s
cargo check (msrv) (windows-latest)	1m 48s
cargo check (msrv) (macos-latest)	35s
cargo check (msrv) (ubuntu-latest)	40s
cargo check (msrv) (wasm32)	46s
cargo check (aarch64-android)	42s
cargo doc	1m 39s
formatting	37s
cargo test (wasm32)	28s
typos	3s
cargo test (windows-latest)	1m 58s
cargo test (macos-latest)	1m 22s
cargo test (ubuntu-latest)	2m 46s
	20m 10s

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