[i18n-activity] index sorting

aphillips has just created a new issue for https://github.com/w3c/i18n-activity:

== index sorting ==
https://www.w3.org/TR/IndexedDB-2/#index-construct

> The records in an index are always sorted according to the record's key. 

This allows for an index sorted by code unit, but this is often not the most useful sort order. Being able to define a natural language sort, such as one based on UCA, would be extremely useful. Otherwise implementations have to obtain the complete list of records and sort them in memory--which is kind of beside the point.

Please view or discuss this issue at https://github.com/w3c/i18n-activity/issues/368 using your GitHub account