[$] Development statistics for the 5.7 kernel

The 5.7 kernel was released onMay 31. By all appearances this was a normal development cycle,unaffected by the troubles in the wider world. Still, there are things tobe learned by looking at where the code came from this time around. Readon for LWN's traditional look at who contributed to 5.7, who supported thatwork, and the paths by which it got into the mainline.