Data Labels for Line and Bar Charts

[SvenMuc]

Hi,

really cool library, but I still miss some basic features.

It would be really nice if we can show data labels in the line and bar charts.
Additionally the location should be configureable (e.g. above, below line marker, inside, center or outside of a bar).

Would do you think?

Regards
Sven

[francescoleoni98]

See Issue #44