[$] A last look at the 4.19 stable series

The release of the 4.19.325 stablekernel update on December5 marked the end of an era of sorts.This kernel had been supported for just over six years since its initialrelease in October 2018; over that time, 325 updates were released,adding 30,109 fixes. Few Linux kernels receive public support for so long;it is worth taking a look at this kernel's history to see how it playedout.