Eagerx-gui

Fix
* Replace `get_spec`. ([`bcc931c`](https://github.com/eager-dev/eagerx_gui/commit/bcc931cd5fc8edbf953a89187cf46a9b343c9ed5))

Documentation
* Update bibtex typo ([`a0f98e1`](https://github.com/eager-dev/eagerx_gui/commit/a0f98e13641289f38965e7a5cae255d95d35643d))

Fix
* Bump pyqt6 to 6.3.0 ([`d097742`](https://github.com/eager-dev/eagerx_gui/commit/d0977422046619a2b8fd9c30a38b9dfe7430eb9d))
* Refactor `is_reactive` to `sync` ([`62b77b8`](https://github.com/eager-dev/eagerx_gui/commit/62b77b847d1d3f64783a1e6de5d539cc89bc4e94))

Fix
* Improve node positioning in engine graph ([`887d89d`](https://github.com/eager-dev/eagerx_gui/commit/887d89da777d657b93f183410a2385867585d23e))

Documentation
* Clean up code eample readme ([`af18449`](https://github.com/eager-dev/eagerx_gui/commit/af18449a725414a034d2075e48655072de632b91))
* Update gif ([`3e912fd`](https://github.com/eager-dev/eagerx_gui/commit/3e912fd008444b2fd049d8ae6382e27b7567d5fb))
* Add example with gif ([`bfe619e`](https://github.com/eager-dev/eagerx_gui/commit/bfe619e9a8ae1ed7006c33bf60324f4748d07129))

Feature
* Dummy commit to trigger minor release ([`5ea0f5c`](https://github.com/eager-dev/eagerx_gui/commit/5ea0f5ca42853befa8f7a0c54941bf8eb6e8c77d))

Fix
* Minor changes related to bump pyqtgraph and to improve visualisation gui ([`f7eca7a`](https://github.com/eager-dev/eagerx_gui/commit/f7eca7a8ef841be6437f73cb92c88f37bcac2c50))
* Flake8 dependency ([`c39dc2d`](https://github.com/eager-dev/eagerx_gui/commit/c39dc2db765dabdcb1c2132d62ef358d47e186bc))

Fix
* Bump pyqtgraph and pyqt solves render and gui incompatibity ([`13242a8`](https://github.com/eager-dev/eagerx_gui/commit/13242a8e4ae9551901de6f4714f0f46634c7b5a6))
* Bump pyqtgraph and pyqt solves render and gui incompatibity ([`7b91702`](https://github.com/eager-dev/eagerx_gui/commit/7b91702fa9f72268ae4916380002260c99a3d2c2))