Node.js version support

The pump.io project follows the upstream Node.js support schedule, and will support any Node.js release considered to be either "current", an "active LTS", or in "maintenance" by upstream. Support for any other Node.js version will be supported on a best-effort basis.

Some more notes:

• We will try to announce the deprecation of particular Node.js versions at least a release in advance.
• Releases that completely drop support for any Node.js version will always be marked as semver-major.
• We reserve the right to make exceptions to this policy for technical reasons, but any such decision will be communicated far enough in advance for folks to plan for it.

Questions can be directed to the community.