No binary clock plasmoid in KDE Plasma

I’ve recently upgraded to Leap 42.1 and I wanted to add the binary clock widget to my bottom panel like I had in previous versions of openSUSE. But I can’t find it. I’ve searched “binary” and “clock” and it’s not there. There are 3 other clocks - digital, analog and fuzzy but no binary one.
And I can see that there is such a widget here.
I also have plasma5-addons installed according to YaST2.

Probably no one has ported it to plasma5

So this link I gave is for Plasma 4? I thought since there is no version, that it’s the most recent one.
If it’s for Plasma 4, can I find a source code for Plasma 4 widgets? Because I couldn’t find it here.