4.0.0

[new] Completly rewritten to ES6
[new] Library is now compatible with Webpack
[new] Library is ready for async/await
[change] Removed support for < Node.js 4
[change] Removed support for outdated node-tds and msnodesql drivers
[change] Removed require('mssql/nofix') syntax
[change] Removed verbose and debug mode
[change] Removed 'driver' from options
[change] Removed Transaction and Prepared Statement queues
[change] Removed 'multiple' directive
[change] Connection renamed to ConnectionPool
[change] Updated to latest Tedious 2.0.0