v3.1.0
Features
- optimise and test code for various versions of MongoDB i.e. v3.4, v3.6, v4.0, v4.2
Code base optimized and tested against
MongoDB v3.4, v3.6, v4.0, v4.2
Node version v8, v10 and v12
There was an issue why publishing from previous pull #2 . Redo to ensure correct semver numbers set