[$] A last look at the 4.19 stable series

The release of the 4.19.325 stable
kernel update on December 5 marked the end of an era of sorts.
This kernel had been supported for just over six years since its initial
release 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 played
out.