dominoes: update version file (1.0.0 -> 2.1.0) #1409 (#1446)
dominoes: update version file (1.0.0 -> 2.1.0) #1409 (#1446)


FridaTveit/xjava,exercism/xjava,jmluy/xjava,jmluy/xjava,exercism/xjava,FridaTveit/xjava