Stroke

[TrabacchinLuigi]

I think would be nice to have a stroke feature just like this https://msdn.microsoft.com/en-us/library/ms745816.aspx we can find an implementation here http://stackoverflow.com/a/35262509/1345207 if someone will have the time to try this, i would suggest packetizing this as something new wich we could depend on.

[charri]

Looks doable but would require using the new rendering method used in #33

[TrabacchinLuigi]

sounds like one more reason to implement #33 solution

[chucker]

Has anyone taken a stab at this?

Is there a different way to define thickness?