I’ve recently switched to managing my own registry. This makes it surprisingly easy to manage multiple interdependent specialised packages and controlling compatibility between them. Most Julia packages use test driven development, there is nothing different here. If you want to be cautious - first pass all tests locally, then push, then the tests run again on Travis in multiple environments. And only when you are satisfied with both layers of testing you bump the version number. If you start a new “project” based on your package eco-system you specify which compatible versions of your packages are allowed. I’m not a software developer by any measure, but I’ve found the tools available in the Julia eco-system extremely helpful to me in these regards. It may be worth reading
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