Add specs for DataMapper::AliasSet#attributes
Add specs for DataMapper::AliasSet#attributes

endash/rom,dcarral/rom,rom-rb/rom,pxlpnk/rom,denyago/rom,jeremyf/rom,Snuff/rom,rom-rb/rom,cored/rom,dekz/rom,pvcarrera/rom,kwando/rom,pdswan/rom,vrish88/rom,rom-rb/rom