CHANGELOG.md in dbf-3.1.3 vs CHANGELOG.md in dbf-4.0.0

@@ -1,4 +1,10 @@
+# 4.0.0
+  - Drop support for ruby-2.2 and earlier
+
+# 3.1.3
+  - Ensure malformed dates return nil
+
 # 3.1.2
   - Fix incorrect columns list when StringIO and encoding set
 
 # 3.1.1
   - Use Date.strptime to parse date fields