Squashed commit of the following:
-rw-r--r-- 1345 LICENSE
-rw-r--r-- 4224 Makefile
-rw-r--r-- 1968 README.md
-rwxr-xr-x 973 check-packagexml.php
-rw-r--r-- 443 gen-matrix.php
-rwxr-xr-x 1029 php-version.php