Add Panel background brush support. #142
Add Panel background brush support. #142

wieslawsoltes/Perspex,SuperJMN/Avalonia,OronDF343/Avalonia,susloparovdenis/Avalonia,jkoritzinsky/Avalonia,DavidKarlas/Perspex,SuperJMN/Avalonia,jkoritzinsky/Avalonia,grokys/Perspex,AvaloniaUI/Avalonia,MrDaedra/Avalonia,wieslawsoltes/Perspex,bbqchickenrobot/Perspex,susloparovdenis/Avalonia,MrDaedra/Avalonia,AvaloniaUI/Avalonia,jkoritzinsky/Perspex,wieslawsoltes/Perspex,jkoritzinsky/Avalonia,AvaloniaUI/Avalonia,wieslawsoltes/Perspex,Perspex/Perspex,SuperJMN/Avalonia,jazzay/Perspex,AvaloniaUI/Avalonia,kekekeks/Perspex,tshcherban/Perspex,AvaloniaUI/Avalonia,kekekeks/Perspex,SuperJMN/Avalonia,akrisiun/Perspex,susloparovdenis/Perspex,jkoritzinsky/Avalonia,danwalmsley/Perspex,wieslawsoltes/Perspex,AvaloniaUI/Avalonia,punker76/Perspex,jkoritzinsky/Avalonia,susloparovdenis/Perspex,jkoritzinsky/Avalonia,jkoritzinsky/Avalonia,Perspex/Perspex,wieslawsoltes/Perspex,OronDF343/Avalonia,SuperJMN/Avalonia,wieslawsoltes/Perspex,SuperJMN/Avalonia,SuperJMN/Avalonia,AvaloniaUI/Avalonia,grokys/Perspex