[elreq] Position of wordspace when expanded needs to be standardised (#123)

r12a has just created a new issue for https://github.com/w3c/elreq:

== Position of wordspace when expanded needs to be standardised ==
There need to be some rules about how to position the ink within the wordspace character (with the word, or centred), and a control to allow the preferred style of positioning. I'm classifying that as an advanced control. See <a href="https://w3c.github.io/elreq/#ethiopic_justification">the requirements</a>.

Please view or discuss this issue at https://github.com/w3c/elreq/issues/123 using your GitHub account