Entium is out of date with EPT format

Entwine has had some significant changes recently in preparation for an upcoming 2.0 release which will include the introduction/release of the Entwine Point Tile (EPT) format specification. Description of the changes is [here](https://github.com/connormanning/entwine/pull/139), and current EPT format description is [here](https://github.com/connormanning/entwine/blob/master/doc/entwine-point-tile.md).