- fixed an incorrect method reference in AttrValueEI()
implemented a complete set of methods GetIntAttrIndDatN(), GetStrAttrIndDatN(), GetFltAttrIndDatN(), GetAttrIndN(), GetAttrIndE(), fixed NodeId to NodeI for iterators
- implemented GetIntAttrIndDatE(), GetFtlAttrIndDatE(), GetStrAttrIndDatE()
- implemented IsAttrDeletedN(), IsIntAttrDeletedN(), IsFltAttrDeletedN(), IsStrAttrDeletedN(), IsAttrDeletedE(), IsIntAttrDeletedE(), IsFltAttrDeletedE(), IsStrAttrDeletedE()
Added implementation of LoadEdgeListNet
Added SaveEdgeListNet method
Added more commenting to file
Replace edge attributes with default value with - in files
Load/SaveEdgeListNet now supports node attributes
Merge remote-tracking branch 'upstream/master'

Conflicts:
	snap-core/network.h
Added comments for methods in gio.cpp
Now ignores blank lines
END sentinel line optional for LoadEdgeListNet
Merge pull request #53 from sramas15/master

Implement LoadEdgeListNet and SaveEdgeListNet
- integrated updates to SNAP from IJS qminer
renamed min and max macros in glib-core/bd.h in order to avoid conflicts with std::min and std::max
Merge remote-tracking branch 'refs/remotes/origin/master'