[$] 5.1 Merge window part 2
By the time that 5.1-rc1 was released and the 5.1 merge window ended, 11,241 non-merge changesets had been pulled into the mainline repository. Of those, just over 5,000 were pulled since the first 5.1 merge-window summary. It often happens that the biggest changes are pulled early, with the emphasis shifting to fixes by the end of the merge window; this time, though, some of the most significant features were saved for last.