I am Darshan Kadu, I am doing vertex painting improvement project during GSoC 2017.
here is the link to the proposal https://wiki.blender.org/index.php/User:Darshan/GSoC2017/Proposal
Link to my branch is --> https://developer.blender.org/diffusion/B/browse/soc-2017-vertex_paint/
I will be writing report every week --> https://wiki.blender.org/index.php/User:Darshan/GSoC2017/Reports
I will require the help of blender artists and users to test the implemented features and also for the suggestion in the features.
Hope you will like my work. Looking forward for the feedback !!