Update changelog (for remove rdfa entry).

Author: dmitrizagidulin

CHANGELOG.md

@@ -1,5 +1,10 @@
 # jsonld ChangeLog
 
+## 4.0.0 - tbd
+
+### Removed
+- **BREAKING**: RDFa parser moved to `jsonld-rdfa` package.
+
 ## 3.3.0 - 2021-01-21
 
 ### Changed
@@ -166,7 +171,6 @@
 - **BREAKING**: Remove deprecated `loadDocument` API and obsolete
   `DocumentCache`.
 - **BREAKING**: Remove deprecated support for parsing legacy dataset format.
-- **BREAKING**: RDFa parser moved to `jsonld-rdfa` package.
 
 ## 1.8.1 - 2019-10-24