Implement WordPress version checking
Squashed 'lib/aihrus/' content from commit 639684c

git-subtree-dir: lib/aihrus
git-subtree-split: 639684c58140e0b2711958c4a973e230d9ba4e0c
Merge commit 'e0ca0fab4f83bdef0478ef620e9170057c20ffe2' as 'lib/aihrus'