In theory the patch verison should be painless and always a given upgrade. The minor version might have at least the same number of important bug fixes, it's ju

In theory the patch verison should be painless and always a given upgrade. The minor version might have at least the same number of important bug fixes, it's just coming with a different cost of having larger changes as well. Some fixes only come with larger changes. Like the recently posted rust regex 1.9 release. Only a rewrite of the library fixed some long-standing issues.