Merge branch 'php73-tests' into 'develop'

Test for official PHP 7.3, no more RC.

See merge request !229

.gitlab-ci.yml

@@ -14,7 +14,7 @@ test:7.2:
   script:
   - php composer.phar check-code
 
-test:7.3-rc:
-  image: php:7.3-rc-cli-alpine
+test:7.3:
+  image: php:7.3-cli-alpine
   script:
   - php composer.phar check-code

CHANGELOG.md

@@ -5,6 +5,7 @@ The format is based on [Keep a Changelog] and this project adheres to [Semantic
 ### Added
 - osada version check
 ### Changed
+- test for official PHP 7.3 release
 ### Deprecated
 - api-more.php calls. old droid app been dead for years
 ### Removed