Can set stroke and fill on text and shapes (#551)

* Can set stroke and fill on text and shapes

* resend layout on failed update

* text input properly resets on bad input

* support modifying gradients

* can modify gradients in the properties panel

* updated labels

* remove heap allocation in favor of RC

* removed redundent line

* oops

graphene/src/operation.rs

@@ -1,7 +1,7 @@
 use crate::boolean_ops::BooleanOperation as BooleanOperationType;
 use crate::layers::blend_mode::BlendMode;
 use crate::layers::layer_info::Layer;
-use crate::layers::style;
+use crate::layers::style::{self, Stroke};
 use crate::LayerId;
 
 use serde::{Deserialize, Serialize};
@@ -180,6 +180,10 @@ pub enum Operation {
 		path: Vec<LayerId>,
 		fill: style::Fill,
 	},
+	SetLayerStroke {
+		path: Vec<LayerId>,
+		stroke: Stroke,
+	},
 }
 
 impl Operation {