Rust

Clean up request-repaint logic: always request at least two repaints #156

Job	Run time
Format + check + test	2m 40s
android	32s
cargo-deny aarch64-apple-darwin	41s
Check wasm32 + wasm-bindgen	2m 27s
cargo-deny aarch64-linux-android	42s
Check Windows	2m 17s
cargo-deny i686-pc-windows-gnu	52s
cargo-deny i686-pc-windows-msvc	1s
cargo-deny i686-unknown-linux-gnu	46s
cargo-deny wasm32-unknown-unknown	49s
cargo-deny x86_64-apple-darwin	46s
cargo-deny x86_64-pc-windows-gnu	40s
cargo-deny x86_64-pc-windows-msvc	53s
cargo-deny x86_64-unknown-linux-gnu	56s
cargo-deny x86_64-unknown-linux-musl	40s
cargo-deny x86_64-unknown-redox	42s
	16m 24s

Provide feedback