Engines and rendering crates I evaluated for RWs - especially whether they support WASM.

Up to date as of 2021-02-16.

Engines
    godot
    https://crates.io/crates/amethyst
        WASM in progress: https://github.com/amethyst/amethyst/issues/2260
    https://crates.io/crates/bevy
        no WASM yet: https://github.com/bevyengine/bevy/issues/88
    https://crates.io/crates/coffee
        no WASM: https://github.com/hecrj/coffee/issues/135 (not even a reply)
    https://crates.io/crates/ggez
        WASM in progress: https://github.com/ggez/ggez/issues/71
    https://crates.io/crates/macroquad
        win/lin/mac + WASM + android
        bad docs, some examples
    https://crates.io/crates/piston
        no WASM: https://github.com/PistonDevelopers/piston/issues/1131
    https://crates.io/crates/quicksilver
        win/lin/max + WASM
        no audio in 0.4?
            https://github.com/ryanisaacg/quicksilver/issues/552
            https://github.com/RustyVolley/RustyVolleySrc in 0.3 has sound
            2021-02 update
                - can't find any mentions of sound anymore
                - quicksilver is no longer developed
            8 example games in readme (mostly bad)
rendering only
    https://crates.io/crates/luminance - mentions webgl/canvas
    https://crates.io/crates/miniquad - should support WASM
    wgpu?