Add support for node.js v14 (the “Current” node version and next LTS)

[acusti]

now that node.js v14 is out (initially released on april 21, 2020), it would be awesome to be able to use it in AWS ahead of active LTS start (which will be october 10, 2020).

[mhart]

I've thought about this, but I wasn't sure which direction to go in terms of things like ES modules and top-level await, and what support I should provide there

[sodiray]

@mhart I'm moving a suite of GCP cloud run functional services written in node 14 to AWS and I really would like to avoid the transpiling down to 12 so I'm going to give a run at setting up v14 with this project. Forked and working on it now 🔨

[sodiray]

@mhart huge kudos to this project's setup when I say... wow, that was easy. Took me about an hour 🧙‍♂️ PR here