- Refine and use OCPP error specialisation [`14763b4`](https://github.com/jerome-benoit/charging-stations-simulator/commit/14763b466177d8e74d2e1925647e04e2d62ac72a)
- Use IIFE (https://developer.mozilla.org/en-US/docs/Glossary/IIFE) for [`821c6c8`](https://github.com/jerome-benoit/charging-stations-simulator/commit/821c6c8229d6dfdc93ce917dfaad74e681e5a35c)
- Refine and use OCPP error specialisation [`14763b4`](https://github.com/jerome-benoit/charging-stations-simulator/commit/14763b466177d8e74d2e1925647e04e2d62ac72a)
- Use IIFE (https://developer.mozilla.org/en-US/docs/Glossary/IIFE) for [`821c6c8`](https://github.com/jerome-benoit/charging-stations-simulator/commit/821c6c8229d6dfdc93ce917dfaad74e681e5a35c)