Add package version to packaged js

[TrevorJTClarke]

Currently there is no way to check what version is available for CDN based distribution: https://unpkg.com/web3data-js/dist/web3data.min.js

The version of each built file should be added along the methods as a way to check package version.

Syntax Idea: const version = Web3Data.version console.log(version) // 0.7.3