Remove old snapshot parameter for Transform.apply (#361)

docs/reference/models/transform.md

@@ -89,7 +89,7 @@ Transform methods can either operate on the [`Document`](./document.md), the [`S
 
 Applies all of the current transform steps, returning the newly transformed [`State`](./state.md). An `options` object is optional, containing values of:
 
-- `snapshot: Boolean` — override the editor's built-in logic of whether to create a new snapshot in the history, that can be reverted to later.
+- `save: Boolean` — override the editor's built-in logic of whether to create a new snapshot in the history, that can be reverted to later.
 
 
 ## Current State Transforms

examples/images/index.js

@@ -128,7 +128,7 @@ class Images extends React.Component {
         data: {}
       })
       .apply({
-        snapshot: false
+        save: false
       })
 
     this.onChange(normalized)

src/models/state.js

@@ -429,7 +429,7 @@ class State extends new Record(DEFAULTS) {
       rule.normalize(transform, document, value)
     }
 
-    return transform.apply({ snapshot: false })
+    return transform.apply({ save: false })
   }
 
   /**