This raises the minimum requirement to 5.3.1.
Even Ubuntut 8.0.4 (the oldest still supported LTS) has PHP 5.3.2 and Debian stable has PHP 5.3.3 so I see no harm in requiring 5.3.1.
It could be a good idea to change the README.markdown file (requiring PHP 5.3.1)
Remove a workaround for PHP 5.3.0 in JLanguage.
Good point, fixed.
Nice to get rid of that annoying workaround finally.