lots of refactoring for the dynamic vertex in addition to planning out documentation

src/canvas/canvas_buffer.rs

@@ -1,4 +1,3 @@
-use crate::canvas::canvas_state::{CanvasTextureHandle, CanvasImageHandle, CanvasFontHandle};
 use vulkano::image::{ImmutableImage, AttachmentImage};
 use std::sync::Arc;
 use vulkano::format::{Format, R8Unorm};
@@ -8,6 +7,7 @@ use vulkano::descriptor::descriptor_set::PersistentDescriptorSet;
 use vulkano::buffer::{CpuAccessibleBuffer, BufferAccess};
 use vulkano::pipeline::GraphicsPipelineAbstract;
 use rusttype::Font;
+use crate::canvas::{CanvasTextureHandle, CanvasImageHandle, CanvasFontHandle};
 
 
 /// Canvas buffer which represents an allocated Texture with a key and dimensions