[Nice To Have] Additional stats in chart

[Fabian]

Hello, 

Currently, we see the overall average and top speed statistics on the profile page. In my case, my average sits at 38wpm and my top speed at 60. This is over 750 sessions. Even though I consistently hit above fifty wpm my average will always drastically lag behind. It would therefore be great if we could get an additional "average over last X sessions" statistic (maybe this is just today's sessions or something like last 50/100).

Additionally it would be great to see the graph(s) rolled up by day/week. My performance varies day by day and it would be great to see that on the graph instead of each individual session (where the total number also varies greatly).

Thanks