Add Flatlaf FlatLightLaf and FlatDarkLaf
Add Yaru icon set (normal and small)
Add license information for Flat Look and Feel
Add license information for Yaru icon set
Remove program crash when choosing Seaglass Look and Feel
Correct license information for Seaglass Look and Feel
Add Flatlaf FlatLightLaf and FlatDarkLaf Add Yaru icon set (normal and small) Add license information for Flat Look and Feel Add license information for Yaru icon set Remove program crash when choosing Seaglass Look and Feel Correct license information for Seaglass Look and Feel