At last, the work of my last weeks is online.
First, here is my latest plugin, Blacky. It is a blacks slider (I mean two blacks sliders). The first is a more subtle adjustment, I recommend to use that tool for a nice effect. The second slider is a black level adjustment.
Both effects can be achieved with the curves tool, but maybe a dedicated control is easier to use. Maybe that's why this feature was asked several times in the Bibble support forums.
And before I forget: Blacky is opensource, so if you want to modify it, just get the source code!

The second news is that SallyPro got updated. This fixes finally the crash on Mac when the plugin got enabled. I'd like to apologise that the previous versions of SallyPro didn't work on this platform. Sincerely I don't own a Mac and I just compiled the sources which worked for Windows and Linux for Mac. But, well, they didn't work as expected.
Big thanks for RobiWan for his help and his time to find this bug!