- started working on tracking hold selection parameters autuomatically
- refactored tracked parameter rebinding to avoid hardcoded instant-updates assumptions
- renamed define_module_params() to just define_params()
- converted stats to GwyFool
- added missing terminating 0 to gwy_dialog_add_stock_buttons()
- use tool flags to check if can work with the current data kind
- changed Dialog preview gsource priority to HIGH_IDLE, so it is still idle, but it is not
- unmarked fool.h being private to get (temporary) syntax highlighting