Draw antialiased lines on non-pixel coordinates

[KarelPeeters]

As far as I can tell there are two functions to draw lines in this crate:

• draw_antialiased_line_segment, which draws antialiased lines but only takes integer/pixel coordinates so you can't be as precise as you want
• draw_line_segment which takes f32 coordinates but unfortunately doesn't do any antialiasing

Would it be possible to add a function that combines both of these features?

[KarelPeeters]

It looks like https://docs.rs/line_drawing/0.8.0/line_drawing/struct.XiaolinWu.html has a working implementation, it might be interesting to share the actual algorithms between the two crates.