4.2.0

What's Changed

• Added Spring.reset_on_env to define environment variables which should cause spring to reload when they change.
• Added Spring.spawn_on_env to define environment variables that should cause spring to start a distinct server.
• Better handle a case where the server could hang.

New Contributors

• @technicalpickles made their first contribution in #708

Full Changelog: v4.1.3...v4.2.0