In this version I implemented an useful dodge and burn tool (tough still buggy). I will only show you an example in an image.
Sample image
(I'm not that good drawing, but I hope it explains the feature)
Repository
https://github.com/wearecodexx/pixteem
The commit
https://github.com/wearecodexx/pixteem/commit/1848bb269c48867708b8b60107e80a1593cfeee3
Thanks for the supporter and have a nice day.