Add changelog

Author: paulbalandan

Diff for: user_guide_src/source/changelogs/v4.6.1.rst

@@ -40,6 +40,7 @@ Bugs Fixed
 - **Database:** Fixed a bug in ``Postgre`` and ``SQLite3`` handlers where composite unique keys were not fully taken into account for ``upsert`` type of queries.
 - **Database:** Fixed a bug in the ``OCI8`` and ``SQLSRV`` drivers where ``getVersion()`` returned an empty string when the database connection was not yet established.
 - **Logger:** Fixed a bug where the ``{line}`` variable couldn't be used without specifying the ``{file}`` variable when logging the message.
+- **Session:** Fixed a bug where ``Session::markAsTempdata()`` would give the wrong TTL when array data is supplied to ``Session::setTempdata()``.
 - **Toolbar:** Fixed a bug where setting ``maxHistory`` to ``0`` would produce a JavaScript error in the Debug Toolbar.
 - **Toolbar:** Fixed a bug where setting ``maxHistory`` to ``0`` prevented log files from being properly cleared.