D is on his way to Top 20 in Tiobe

[Ola Fosheim Grøstad via Digitalmars-d]

On Saturday, 12 December 2015 at 12:04:47 UTC, tchaloupka wrote:
> dmd stars: https://plot.ly/~chalucha/4/stars-vs-month

Thanks, I love this one. So one might infer that the "engagement 
level" was steady until the middle of 2012, then a slight drop in 
last half of 2012 and then a rather steep jump at the beginning 
of 2013. Since then there has been no change. Is that reasonable?

And what happend in the beginning of 2013?