In the root of the juce repository, there are still some old juce_amalgamated.h/cpp files, and a juce.h file... It's years now since I even looked at them, or checked that they even work (I assume they probably don't!).
So since nobody has complained about any problems with them, I guess everyone has now moved on to using modules, and it's safe for me to nuke these files and clean up the repository? Let me know quickly if not!