8.0.4 release (#678)

* Remove '(prerelease)' from release notes

* Bump version

Author: ExplodingCabbage

package.json

@@ -1,6 +1,6 @@
 {
   "name": "diff",
-  "version": "8.0.3",
+  "version": "8.0.4",
   "description": "A JavaScript text diff implementation.",
   "keywords": [
     "diff",

release-notes.md

@@ -1,6 +1,6 @@
 # Release Notes
 
-## 8.0.4 (prerelease)
+## 8.0.4
 
 - [#667](https://github.com/kpdecker/jsdiff/pull/667) - **fix another bug in `diffWords` when used with an `Intl.Segmenter`**. If the text to be diffed included a combining mark after a whitespace character (i.e. roughly speaking, an accented space), `diffWords` would previously crash. Now this case is handled correctly.