automate project release process

[dherman]

Pushing an update to crates.io requires the following manual steps:

Update release notes

• Update the release notes in RELEASES.md.
• Update the authors list in AUTHORS.md to include any names of new contributors.

Update neon manifest versions and test

• Bump the patch version number in neon, neon-build, and neon-runtime crates (they are kept in lock-step at always the exact same major.minor.patch).
• Bump the Cargo.toml dependency on neon-runtime to the exact patch-level version of neon-runtime.
• Run cargo update in test/dynamic/native.
• Run cargo clean && cargo update in test/static.
• Run cargo test in the neon root directory and ensure the tests are green.

Update neon-cli manifest versions and test

• Bump the cli/templates/Cargo.toml.hbs dependencies on neon-build and neon to the exact patch-level version of neon.
• Bump the cli/package.json to the exact patch-level version of neon.
• Run a smoke test of neon new:
  • Run neon new smoke-test in a temp directory.
  • Update the neon dependency to { path = "<path/to/neon>" }
  • Update the neon-build build-dependency to { path = "<path/to/neon>/crates/neon-build" }
  • Change the neon-cli dependency in smoke-test/package.json to <path/to/neon>/cli
  • Run npm i and node -e 'require(".")' and see if it prints "hello node".
• Delete the temporary project.

Commit and push to GitHub

• Commit with a commit message of v$major.$minor.$patch.
• Push the commit to GH.

Publish

• Go into cli and run npm publish.
• Go into crates/neon-build and run cargo publish. (Must be done before publishing neon).
• Go into crates/neon-runtime and run cargo publish. (Must be done before publishing neon (next step)).
• Go into the root directory and run cargo publish.

Tag release branches

• Go to the GitHub repo and click "Releases" and then "Draft a new release" and give it a tag of $major.$minor.$patch and a release title of v$major.$minor.$patch, and check the "This is a pre-release" checkbox and press "Publish release."

I would like to automate as much of this as possible!

/cc @mmun

[dherman]

The "smoke test" portion of this process might be better dealt with using a vargo new --neon abstraction as I sketched quickly in neon-bindings/rfcs#8.

[dherman]

Note to self: investigate using cargo-release for this.

[dherman]

Even though it's not tested, I'm gonna close this issue and call it implemented for now (since #318). I'll open new issues for testing it out with the next release, and for automating it further.