feat: correct plugin "version" prop and expose type

Plugin.ts

@@ -9,14 +9,14 @@ import { Transactor } from './Transactor.js';
  * @property docs - A map of document names to their loaded XMLDocument instances.
  * @property doc - The XMLDocument currently being edited, if any.
  * @property docName - The name of the currently edited document, if any.
- * @property docsState - changes value when the document is modified or documents are added/removed.
+ * @property docVersion - changes value when the document is modified.
  * @property locale - The end user's selected locale.
  */
 export interface Plugin {
   editor: Transactor<EditV2>;
   docs: Record<string, XMLDocument>;
   doc?: XMLDocument; // the document currently being edited
   docName?: string; // the current doc's name
-  docsState: unknown; // current doc's state indicator
+  docVersion: unknown; // changes when the document is modified
   locale: string; // the end user's chosen locale
 }

docs/plugin-api.md

@@ -24,7 +24,7 @@ export default class MyPlugin extends HTMLElement {
   docs: Record<string, XMLDocument> = {}; // all loaded documents
   doc?: XMLDocument; // the document currently being edited
   docName?: string; // the current doc's name
-  docsState: unknown; // changes value when the document is modified or documents are added/removed.
+  docVersion: unknown; // changes value when the document is modified.
   locale: string = 'en'; // the end user's chosen locale
 }
 ```
@@ -46,9 +46,9 @@ The name of the `XMLDocument` currently being edited.
 
 The `XMLDocument` currently being edited.
 
-### `docsState`
+### `docVersion`
 
-A value which changes with edits to the current document AND when documents are opened or closed.
+A value which changes with edits to the current document.
 
 ### `locale`
 

oscd-api.ts

@@ -32,3 +32,5 @@ export type {
 } from './edit-event-v2.js';
 
 export type { OpenDetail, OpenEvent } from './open-event.js';
+
+export type { Plugin } from './Plugin.js';