follow semver for releases

[croconut]

Is your feature request related to a problem? Please describe.
i recently was unable to perform a patch update due to a breaking change in #2719 following semver would prevent this.

Describe the solution you'd like
clear deprecation warnings and/or bumping breaking changes to major version releases.

Describe alternatives you've considered
freezing the version. im updating the code right now, but i would have had an outage if i only used colons on prod. fortunately my dev vs prod is nearly identical wrt this library. that said, now im tempted to add a test suite run with NODE_ENV = production lol

i dont know what else would randomly break on a patch, colons in the queue name was i think the only non-standard thing we do. i would recommend that experimental features not get bugfixes that break other things in a non-major update though.