Summary

This is a minor release(V1.4.1 Beta), mainly for some important bug fixes of V1.4.0; also we add some small features, such as new tree support style, new P1P process presets, new filament presets, disable some functions when connecting to old printer firmware.

Improvements

1. New Tree Support style.
   We have added a new style of tree support called "Tree Slim", which features an aggressive branch-merging strategy. As a result, a much smaller support volume is generated without sacrificing strength (by automatically increasing the wall count and using smoother branches). Besides, the slicing time is greatly reduced thanks to a new support layer height schedule module, especially with small layer height profiles (try the "0.08mm Extra Fine" profile!).
   
   PS: we learned the initial idea and code of tree support came from Cura a few months ago and we are grateful for that.
2. Disable the unsupported functions when connecting to a Printer with old firmware.
3. Add the process presets of P1P(0.08/0.12/0.16/0.24/0.28...)
4. Add new filaments presets(metal PLA-CF & PAHT-CF)
5. Add logic to prompt upgrading of network plugin
6. Disable smooth timelapse in vase mode

Bug fixes

1. Fix the Print_options/slice_options can not be selected issue on Macos 13.x, #842
2. Network plugins downloading issue on windows 7/8, #852
3. shader load failed on Macos 11.x with m1 processor, #881
4. Change Filaments at Layer no longer functions #843
5. the color picker button display wrong color #849
6. Fix some linux compiling&&startup issues on different kinds of platform, thanks @zhaofengli
7. the selected preset lost issue when re-launch application, #896
8. the filament can not change in object table, #876