Accessibility warnings

[amiedavis]

Compiling with webpack and using svelte-loader, warnings are logged for the following:

Controls.svelte:
A11y: on:mouseout must be accompanied by on:blur (330:6)
A11y: on:mouseout must be accompanied by on:blur (412:8)
A11y: on:mouseover must be accompanied by on:focus (330:6)
A11y: on:mouseover must be accompanied by on:focus (412:8)

Popover.svelte:
A11y: on:mouseout must be accompanied by on:blur (81:0)
A11y: on:mouseover must be accompanied by on:focus (81:0)

Would it make sense to implement on:blur and on:focus for these cases? Otherwise, it looks like these warnings can be suppressed by adding a svelte-ignore comment above each line, i.e.
<!-- svelte-ignore a11y-mouse-events-have-key-events -->