MotoPower.lv new posts extension

This is a small extension built for a Latvian Motorcycle riders forum which allows better accessability on the homepage of this site.
It checks for the date of last arrival at page. If any new post's of the front page is newer than your last visit's time, it prepends last forum posts' link with "[NEW]"

Source: https://github.com/waplet/mp-extension

v0.12: Manifest update to v3
v0.11: Ignoring [NEW] attribute for own posts
v0.10: Implemented timezone support
v0.9: "index.php" is now also included in link
v0.8: Finally 10 minutes delay for "NEW" posts recognition available.
v0.7: Tired of time fixes
v0.6: Made temporary last seen time non stacking with newly needed last seen time
v0.5: Fixed non-working temporary last seen
v0.4: Saves your last visit for ten minutes until then showing all posts as new even after refresh