v0.7 is mostly for developers upgrading packages. It is nice because it throws warnings instead of errors for things that changed. So if it works on v0.7 withou

v0.7 is mostly for developers upgrading packages. It is nice because it throws warnings instead of errors for things that changed. So if it works on v0.7 without depwarns then it will be 1.0 compatible. But in many cases it's not perfect yet, so staying at v0.6 can be nicer than throwing a bunch of depwarns at new users.