v3.1.3

• A stricter fix for null value encoding to make sure it fully conforms to the specification #43.

v3.1.2

• Fix encoding of null property values (h/t @porsager)
• Avoid publishing a 4MB bench folder to NPM (h/t @TrySound)

v3.0.1

• Encode GeoJSON Multipoint correctly (#20)
• Improve performance by streaming writes (#19)