6.0.0-beta (#543)

Author: ExplodingCabbage

package.json

@@ -1,6 +1,6 @@
 {
   "name": "diff",
-  "version": "5.2.0",
+  "version": "6.0.0-beta",
   "description": "A JavaScript text diff implementation.",
   "keywords": [
     "diff",

release-notes.md

@@ -1,6 +1,10 @@
 # Release Notes
 
-## Future breaking 6.0.0 release
+## 6.0.0 (currently in beta)
+
+This is a release containing many, *many* breaking changes. The objective of this release was to carry out a mass fix, in one go, of all the open bugs and design problems that required breaking changes to fix. A substantial, but exhaustive, changelog is below.
+
+I am releasing this in beta for now, in the hope that a few users will upgrade now and submit bug reports if I've broken anything without realising it. I intend to do a final 6.0.0 release before the end of August. -- Mark "ExplodingCabbage" Amery.
 
 [Commits](https://github.com/kpdecker/jsdiff/compare/master...v6.0.0-staging)