Polygons do not accept integers

[jpswinski]

In the v5 Python client, supplying a bound box like: [{'lon': -120, 'lat': -25}, {'lon': -95, 'lat': -25}, {'lon': -95, 'lat': 0}, {'lon': -120, 'lat': 0}, {'lon': -120, 'lat': -25}] no longer works. It gives the error:

 TypeError: Object of type int64 is not JSON serializable

When the numbers are converted to floats, everything works: [{'lon': -120.0, 'lat': -25.0}, {'lon': -95.0, 'lat': -25.0}, {'lon': -95.0, 'lat': 0.0}, {'lon': -120.0, 'lat': 0.0}, {'lon': -120.0, 'lat': -25.0}]