Release 1.20.3 (#3340)

* fix edit timesheet link
* fix drag & drop creates record for wrong user
* fix search with multiple bindings
* hide user switcher in calendar if there is only one user to choose
* make quick entry responsive for mobile-only users
* mark invoices as exported by default
* fix serialization deprecation warning
* fix duration calculation for fixed rate entries
* updated composer packages
* fix checkbox for horizontal forms
* support pdfContext for PDF invoice templates

composer.json

@@ -25,6 +25,7 @@
         "doctrine/doctrine-bundle": "^2.0",
         "doctrine/doctrine-migrations-bundle": "^3.0",
         "doctrine/orm": "^2.8",
+        "doctrine/persistence": "^2",
         "erusev/parsedown": "^1.6",
         "friendsofsymfony/rest-bundle": "^3.0",
         "gedmo/doctrine-extensions": "^3.6",