Improve visual feedback

[pedrovgs]

I'm working on a project which project file has 38749 lines. I executed Kin when I messed up resolving a conflict on a project file and it saved my life again but for some time I couldn't see any feedback about what kin was doing and I thought something went wrong.

In order to improve the project usage, it could be great if we can add any visual feedback like a message or a progress bar shown to the user while kin is doing some magic.

I'd really like to collaborate with this project so if you tell me where to start looking at I can take a look and try to implement it by myself :)

[Serchinastico]

That's a great idea, I just saw there is a library to do just that that we could use: https://github.com/niltonvolpato/python-progressbar

I'm still not sure which version of the progress bar should we use or if we should be doing estimates by registering an antlr listener to see how much of the file has been processed.