dig method update
dig method update

dig method now raises TypeError if an intermediate element does
not have #dig method.

ruby/rubyspec,ruby/spec,ruby/spec,eregon/rubyspec,wied03/rubyspec,eregon/rubyspec,sgarciac/spec,nobu/rubyspec,kachick/rubyspec,wied03/rubyspec,sgarciac/spec,nobu/rubyspec,ruby/rubyspec,kachick/rubyspec,wied03/rubyspec,kachick/rubyspec,ruby/spec,nobu/rubyspec,sgarciac/spec,eregon/rubyspec