Added OldNorsePhonology class which manages some phonetic changes according to the ending (i-umlaut and u-umlaut).
Added OldNorsePhonology class which manages some phonetic changes according to the ending (i-umlaut and u-umlaut).

kylepjohnson/cltk,D-K-E/cltk,TylerKirby/cltk,cltk/cltk,diyclassics/cltk,LBenzahia/cltk,LBenzahia/cltk,TylerKirby/cltk