As you may be aware, 2.1 RC1 was released last week as well as 2.0.7 yesterday.
I know 2.1 implies a lot of changes.
My question is, as a developer, which are the changes I should be aware of and take into consideration ?
I'm not looking for the release notes, I would like a list of stuff that changed in the code that are considered as major changes / breaking changes.
To rephrase it: which changes should I be aware of when coming from 2.0 to 2.1 developer wise ?