Work to do on BCEA

[giabaio]

Here some ideas for (probably relatively minor) changes in the main code of BCEA and some of its functions to improve visualisation of the output (particularly the CEAC).
@seabbs --- something else to think about?

[seabbs]

geom_pointdensity might be a nice option to have. It also is very light dependency wise (https://github.com/LKremer/ggpointdensity/blob/master/DESCRIPTION) which is good.

Moving from pairwise to incremental also seems to make a lot of sense. Perhaps having a top level arugment to choose between the two (or a single funciton wrapper) would be a nice way to surface the option for the user?

[giabaio]

I think so. I think probably be a good idea to not completely modify the way in which the function works, but rather to add functionalities and let the user know about it... Again, I'm happy to be fairly informal and if you say you're happy/willing to take the lead on this, I'll certainly welcome requests for push and will acknowledge all the relevant work, of course! If you would rather I did things properly and set up collaborators, projects, streams, can also do --- but I need to get my head around that... ;-)