Redvox

* Fixed missing start date in Station preventing saving to disk
* Fixed timing_score_method name not being written in .json
* Updated error reporting methods
* runme.py file updated to make plotting data optional

* Added option to enable runme.py file creation when saving DataWindows (default is no creation)
* Added DataWindow saving options to tooltips
* Added DataWindowConfigFile to allow DataWindow creation from a .toml file
* Renamed base_dir in SensorData to save_dir to be in line with other modules
* Fixed bug when creating DataWindows that caused the last timestamp of sensors to be incorrect

* Summary of changes:
* Pyarrow backend implemented for DataWindow, Station, SensorData and underlying classes
* Properties of the above classes have been updated into functions for more secure access
* Please note DataWindows created in versions 3.0.x cannot be loaded in 3.1.0
* Use the latest 3.0.10 to continue to load 3.0.x DataWindows
* OR recreate the DataWindows using 3.1.0

* Requirements for numpy reduced to >=1.19.5
* Added values for DataWindow saving methods in function description

* Added missing functions for Station and SensorData property access
* Documentation updated for new functions

* Updated more functions used by old data window module