* Jerome Leclanche stepped down [1]
* Reduce usage of shell variables
* Switch to git sources
* Cleanup PGP keys of former upstream maintainers
* Simplify

[1] https://lists.archlinux.org/archives/list/arch-dev-public@lists.archlinux.org/thread/ADSCJ3TTMIGAB2TX2EV52LWIORRBPCFT/

* Missing FULL RELRO
* Missing SHSTK (shadow stack)
* Unused shared libraries

archlinux/devtools!109 (comment 74475)

* Fix `license` following a recent upstream commit [1] and install the file
  (README.md) indicating licenses of other files.

[1] https://github.com/lxqt/qtermwidget/commit/b17add8fc0be0b351cd5c995e5ce52081e2a43c0

FTR, commands used to change arch=() and then verify the changes:

$ sed -Ei "/^arch=/{s/ *?['\"]?i686['\"]? *?//;s/ *$//}" */*/PKGBUILD*

$ grep -r i686 * | grep arch= | grep -v repos

$ svn diff | grep -A 1 ^-[^-] | grep -v -- -- | cut -c2- |
  while IFS=$'\n' read -r l1; IFS=$'\n' read -r l2; do
    echo "$l1 -> $l2"
  done | sort -u