[annotator-dev] Add ids to annotators

[Nick Stenning]

Jamie and Randall wrote:
> [stuff about attaching id attributes to annotation highlights]

Is there any particular reason we wouldn't want this enabled by default?

I mean sure, Jamie *could* do this with event hooks. But it seems to
me to be an oversight on my part. I think we should, by default, add
ids of the form "annotation-hl-#{id}" to highlights, if
"annotation.id?".

-N