🛠️ Bug fixes:
* Gantt/Monthly scale: fixed start date of tasks
* Better handling of column margins
💥 Changes:
* User configuration files moved to .PyPlanning folder
* Added a third level of debug, disabling the internal console (see about dialog)
♻ PyPlanning internal changes:
* Added launcher script (dev)
* Updated requirements
* `PlanningData`: fixed design flaw (removed singleton)
* Fixed various code quality issues