Docs update

HISTORY.md

@@ -2,7 +2,7 @@
 
 ### V2.0.0
 
-* Major rewrite, with three significant breaking changes
+* Major rewrite, with three significant breaking changes:
 * BREAKING CHANGE: No more file locking, under the assumption that you write
   files once during upload and henceforth do concurrent reads.
   Make sure your app doesn't require locking.
@@ -14,11 +14,11 @@
   `insert` method has been replaced by `insertEmpty`.
   Relatedly, `allow` no longer has a `write` option; instead,
   POST/PUT and Resumable use `insert` permissions.
-* In the new `insertStream`, `options.range.end` is exclusive.
-  (By contrast, `upsertStream`'s corresponding option was inclusive.)
+* BREAKING CHANGE: In `readOneStream` and the new `insertStream`,
+  `options.range.end` is exclusive (before it was inclusive).
   This won't affect you if you're using the built-in GET handler, which
-  converts from inclusive to exclusive.  If you've written your own GET
-  handler, you'll want to offset by 1.
+  converts from HTTP's inclusive Range to exclusive.
+  If you've written your own GET handler, you'll want to offset by 1.
 * Upgrade to MongoDB's v4 drivers, in particular the modern
   [GridFSBucket interface](https://mongodb.github.io/node-mongodb-native/4.4/classes/GridFSBucket.html)
 * No more `gridfs-locking-stream` dependency