youtube watched videos hider

what is youtube watched videos hider?
it is an small piece of software that will hide watched youtube videos from youtube site, this will give you clean list, stop wasting time in old videos and start discovering new things
its available also as user script for chrome and other browsers
note: https://outgoing.prod.mozaws.net/v1/3fbea1a13d906db5abea338a07be8f7f93b45124efe52d04341390ac47f529d9/http%3A//www.youtube.com/feed/history will not hided, To avoid this feature become useless in youtube

see:

https://3.bp.blogspot.com/-dx-00Wd0hoQ/XM9FTpO-DTI/AAAAAAAAFOM/hrcadMuAsgINpt1g4hnL3Um0YBEwbyMgACLcBGAs/s1600/ffffw.gif

new more stable version, with new improvement fixes
v1.9
-fix the side playlist on watch page partially hided
-www.youtube.com/feed/history will not hided, To avoid this feature become useless in youtube
v1.8
resource usage improvement
fix not working in http://www.youtube.com/feed/subscriptions and http://www.youtube.com/watch?v= pages
v1.7
resource usage improvement
fix bugs
v1.6
fix some problems with first install
fix the video div doesn't hided completely because of YouTube structure updates
v1.5
-fix the addon not show the real status in startup
v1.4
-adding ability to avoid hiding your own videos and playlists
-add button to switch the addon on/off
-decrease resource usage
v1.1
-fix permission
v1.0
-the first version.

>>https://addons.mozilla.org/en-US/firefox/addon/youtube-watched-videos-hider/
for other browsers:
https://addons.mozilla.org/en-US/firefox/addon/tampermonkey/
https://chrome.google.com/webstore/detail/tampermonkey/dhdgffkkebhmkfjojejmpbldmpobfkfo?hl=en
https://addons.opera.com/en/extensions/details/tampermonkey-beta/

https://github.com/ibtisammidlet/youtube-watched-videos-hider/raw/master/youtube-watched-videos-hider.user.js