Add XmlConfiguration class (from refactor)
Add XmlConfiguration class (from refactor)

eniuz/humbug,oswaldderiemaecker/humbug,daniel-mueller/humbug,torreytsui/humbug,mleko/humbug,eniuz/humbug,padraic/humbug,mleko/humbug,daniel-mueller/humbug,JSchwehn/humbug,oswaldderiemaecker/humbug,MakiCode/humbug,torreytsui/humbug,humbug/humbug,stof/humbug,humbug/humbug,MakiCode/humbug,padraic/humbug,JSchwehn/humbug