Support Data Extension API

[rybesh]

This would enable reconcilers using OpenRefine to populate their table with data from PeriodO properties, e.g. pull the start and end years.

https://github.com/OpenRefine/OpenRefine/wiki/Data-Extension-API

[atomrab]

Are we anywhere nearer to this? Selfish question -- I have a bunch of data in a table with PeriodO URIs and would like to extract dates from those rather than paste 'em in manually or run a bunch of find-and-replace operations (I know there are ways to do this with regular expressions or macros, but all of them would take me longer to learn than finding-and-replacing...).

[rybesh]

I've been ignoring the reconciler as we wrap up the client. But I plan to work on it next, getting it working with the latest changes, and the new specifications coming out of OpenRefine.