This is a brain-dump of remaining work to achieve a fully accessible  Hypothesis client.
 fully accessible means that you can use all the functionality with a keyboard (or keyboard-emulating input device) and screen reader (or other assistive tech) conveniently and that it meets (both in letter and spirit) all the WCAG criteria. That doesn't necessarily mean that everything is as fully optimized as it could be (eg. in terms of what keyboard shortcuts are available to speed up various workflows).
- Make it possible to activate highlights with the keyboard
- Make it easier to execute Annotate / Highlight commands using the keyboard