added missing release notes

Author: Sven Ulrich

CHANGELOG.md

@@ -1,7 +1,11 @@
 # CHANGELOG
 
+#### 1.4.1
+- docs: added missing docs for `AppendLine` and `AppendLineFormat`
+- bufix: fixed circleci badge
+
 #### 1.4.0
 - feature: added `AppendLine` and `AppendLineFormat`
 - feature: added hexadecimal conversion specifier
 - bugfix: `StringBuilder` initialization without parameter adds empty string to internal Values Array.
-- bugfix: When there is no placeholder in the template passed to String.Format it should return the original template
+- bugfix: When there is no placeholder in the template passed to String.Format it should return the original template