Buffer constructor runtime deprecation - this package emits a warning on Node 10

[benjamingr]

Hey from Node.js here!,

Starting on Node 10 this package will emit deprecation warnings. See this guide on what you should do in order to migrate to Buffer.alloc/Buffer.from.

See https://github.com/nodejs/node/issues/19079 for discussion around this change and why we can't make new Buffer work