Change exclude_geometry false default to include_geometry true

[rmglennon]

In release 55, there's a new property for exclude_geometry. See #866

If the default of exclude_geometry == false, it means the normal behavior is to return the geometry.

After some discussion, let's consider changing this to a positive so users don't have to think as much. We can do this by making it include_geometry and the default be true.

(The alternative suggestion was to make the property be something like geometry with values of include and exclude instead of a boolean, so do whatever is most consistent with other properties in the datastore.)

[doublestranded]

Make sure to keep backwards compatibility with 'exclude_geometry'.