Pyplanning

🛠️ Bug fixes:

* Logging only when `PLANNINGDEBUG` environment variable is set to `1`, `2` or `3`
(this is considered a bug fix because it was the intended behavior)

🛠️ Bug fixes:

* When switching from XML mode to Tree mode, check if the Tree view can be updated (i.e. if the XML is valid). If not, do not switch to Tree mode and show a warning message instead.
* Fixed crash when application was trying to log a message in standard output (stdout) while running with pythonw.exe (instead of python.exe) on Windows: now redirecting logging to internal Qt console instead of stdout
* Log viewer: improved readability of log messages

💥 Changes:

* New default colors for project tasks (light cyan)
* New default colors for vacations (silver)

🛠️ Bug fixes:

* Reintroduced application logs (were accidentally removed in 1.5.3 following a refactoring)
* XML mode: fixed a bug where the application would crash if the user tried to remove a start date from a task

💥 Changes:

* New default colors for tasks and resources

🛠️ Bug fixes:

* Log all warnings to internal console only if DEBUG is enabled

💥 Changes:

* Added [Python package](https://pypi.org/project/PyPlanning/)
* Added [documentation](https://pyplanning.readthedocs.io/)

🛠️ Bug fixes:

* Fixed hard crashes due to multithreaded internal console