Decide if format compatibility should live in meridian, or in another package

[tomplex]

There should be helpers available for reading different data formats into meridian, such as PostGIS, WKT, etc. Essentially all they would do is read other files / sources of data and convert each row into a GeoJSON feature.

This need is general enough that it could easily be its own library instead of part of meridian itself.

Include in meridian: pros and cons

pros

• Users don't need to install a second package to get common functionality

cons

• Support for PostGIS (which I think is critical) adds a dependency on psycopg2, which the average user might not care about, and requires a separate binary on Windows.

...will add more as I think of them.