docs: fixed changelog.md

Author: Sven Ulrich

CHANGELOG.md

@@ -1,5 +1,13 @@
 # CHANGELOG
 
+#### 1.5.0
+- Using latest typescript version, please check if your environment still works with this version before upgrading!
+- feature: !IMPORTANT methods/properties starting with uppercase are marked deprecated now and will be removed in future versions! Check the deprecated infos
+- feature: `String.isNullOrWhiteSpace` accepts null or undefined now
+- feature: added new methods/properties: `isNullOrWhiteSpace(), formatString(), joinString(), empty`, check [README](https://github.com/sevensc/typescript-string-operations/blob/main/README.md)
+- chore: Updated packages
+- chore: added linting
+
 #### 1.4.1
 - docs: added missing docs for `AppendLine` and `AppendLineFormat`
 - bufix: fixed circleci badge
@@ -9,10 +17,3 @@
 - 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
-
-#### 1.5.0
-- Using latest typescript version, please check if your environment still works with this version before upgrading!
-- feature: !IMPORTANT methods/properties starting with uppercase are marked deprecated now and will be removed in future versions! Check the deprecated infos
-- feature: `String.isNullOrWhiteSpace` accepts null or undefined now
-- chore: Updated packages
-- chore: added linting