api plan

src/main.rs

@@ -1,4 +1,13 @@
 // player lib
+// graphical context
+// - constructor loads map
+// - render view to canvas
+// playback context
+// - constructor loads bot
+// - get_info (duration)
+// - seek to time
+// - advance to time
+// - get view
 // web client with js api
 // desktop client with winit
 // use wasm-pack