message: Make `Frame::stroke` take a generic `Into<Stroke>`
diff: @@ -127,11 +127,13 @@ impl Frame {
  ///
  /// [`Path`]: path/struct.Path.html
  /// [`Frame`]: struct.Frame.html
  - pub fn stroke(&mut self, path: &Path, stroke: Stroke) {
  + pub fn stroke(&mut self, path: &Path, stroke: impl Into<Stroke>) {
  use lyon::tessellation::{
  BuffersBuilder, StrokeOptions, StrokeTessellator,
  };
  + let stroke = stroke.into();
  +
  let mut buffers = BuffersBuilder::new(
  &mut self.buffers,
  StrokeVertex(stroke.color.into_linear()),
  