Sort of mystifying that ByteBuddy (a library) is included while Spring framework is not. I realize that some people point to the edges of the Spring ecosystem as proof that it is low-quality, but it's hard to argue against the framework itself being great.

Edit: To clarify, I also don't agree with 'proof' of Spring being 'low quality'. In my experience most who criticize Spring don't understand that it is a loosely coupled collection of things implemented on top of IoC/AOP, and are frustrated when they are forced to diagnose things that go wrong. From the beginning, Spring moved fast because it wasn't bogged down in committee, and it covers huge portions of software development. Quality does vary between the value add sub-projects, but it's amazing what the Spring community has done with IoC/AOP.