Update changelog

Also repair composer script call

Author: usox

.github/workflows/php.yml

@@ -39,4 +39,4 @@ jobs:
         run: composer install --prefer-dist --no-progress --no-suggest
 
       - name: Run test suite
-        run: composer run-script test
+        run: composer run-script tests

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## [1.10.0] - 2ß21-06-22
+### Added
+- Structs to support upcoming workflow methods
+
 ## [1.9.0] - 2ß21-06-07
 ### Added
 - ContainerType to MailingTemplateConfiguration