* Add serde to phragmen

* Update lock file

* and bump a version

* and bump a version again

* Apply suggestions from code review

Co-Authored-By: Bastian Köcher <bkchr@users.noreply.github.com>

* revert impl-tarit for tuple update

* revert session.

* Revert "revert session."

This reverts commit 98086c9db56677068db85f74320868b2c10d1c00.

* Revert "revert impl-tarit for tuple update"

This reverts commit 28a7fddee2e09c5785b19883f743065e0be8f331.