closes #81

� Conflicts:
�	src/FileHandler.php
�	src/Handler.php
�	src/Session.php
�	src/SessionStore.php

� Conflicts:
�	composer.lock

* feature: type safe getters
closes #81

* loosen type (can be array access)

* feature: implement countable
closes #12

* ci: improve ci, fix security vulnerability

* build: bump deps

* tidy: fix deprecations

* tidy: refactor classes from static analysis

* feature: Iterable SessionStore
closes #11

---------

Co-authored-by: Greg Bowler <greg.bowler@g105b.com>

* feature: type safe getters
closes #81

* loosen type (can be array access)

* feature: flash sessions
closes #3

* tweak: check offset before getting offset (suppress php warning)

---------

Co-authored-by: Greg Bowler <greg.bowler@g105b.com>

* feature: type safe getters
closes #81

* loosen type (can be array access)

* feature: flash sessions
closes #3

* tweak: check offset before getting offset (suppress php warning)

* ci: use phpmd@v2

---------

Co-authored-by: Greg Bowler <greg.bowler@g105b.com>

Bumps [phpstan/phpstan](https://github.com/phpstan/phpstan) from 1.12.25 to 2.1.14.
- [Release notes](https://github.com/phpstan/phpstan/releases)
- [Changelog](https://github.com/phpstan/phpstan/blob/2.1.x/CHANGELOG.md)
- [Commits](phpstan/phpstan@1.12.25...2.1.14)

---
updated-dependencies:
- dependency-name: phpstan/phpstan
  dependency-version: 2.1.14
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>