update comments, reuse `canvas` var, add `window.` to fix lint warnings, remove battery support (deprecated), remove simd support (deprecated), remove blobbuilder support (deprecated), remove return object groupings (not necessary), add `has()` method to return object
update comments, reuse `canvas` var, add `window.` to fix lint warnings, remove battery support (deprecated), remove simd support (deprecated), remove blobbuilder support (deprecated), remove return object groupings (not necessary), add `has()` method to return object

tobius/gamesupport,tobius/gamesupport