Changes:

1. New feature: filter out tiny gaps. Note: for aesthetic considerations, this setting won't affect top/bottom layers. In other words, gap fills that can be seen from outside won't be filtered out
2. PA(pressure advance) now support multi-color printing. A new PA value from the selected filament profile will be applied whenever there is a filament/extruder change action. This change only affects multi-color printing.
3. Users can now set float values of layer time in Filament->Cooling tab.