update changelog and bump version

CHANGELOG.md

@@ -1,6 +1,13 @@
+## v4.1.0
+
+#### Features
+
+- Add `transformPresence()` method
+
 ## v4.0.0
 
 #### Breaking Changes
+
 These were never documented as officially supported but to be safe we are doing a major version bump.
 
 - No longer works in IE8 as there is function called delete and IE8 treats that as a reserved identifier
@@ -10,22 +17,23 @@ These were never documented as officially supported but to be safe we are doing
 ## v3.0.0
 
 #### Breaking Changes
-- Deep copy and compare attributes and deltas
 
+- Deep copy and compare attributes and deltas
 
 #### Features
 
-
 ## v2.1.0
 
 #### Features
-- Add `concat()` method for document Deltas
 
+- Add `concat()` method for document Deltas
 
 ## v2.0.0
 
 #### Breaking Changes
+
 - `compose()` returns a new Delta instead of self-modifying
 
 #### Features
+
 - Support embed being any non-string type

package.json

@@ -1,6 +1,6 @@
 {
   "name": "rich-text",
-  "version": "4.0.0",
+  "version": "4.1.0",
   "description": "OT type for rich text",
   "author": "Jason Chen <[email protected]>",
   "homepage": "https://github.com/ottypes/rich-text",