This allows for the use of Node 6. Note that Node v6 is no longer supported by Node.js (End-of-life'd in April 2019). We recommend updating to Node v8/v10 ASAP, to keep getting security updates and fixes from the Node.js team.
* Add *.tsbuildinfo to .gitignore
* Bump versions of dependencies, nyc and yargs
* Drop support for node 9 (EOL 2018-06-30)
https://github.com/nodejs/Release
* Add getTransaction snippet