add Graph.retrieveEdgeAttribute method
add harness/apiTest.x10
Merge branch 'develop' into feature/apiTest
SimpleTextReader skips null line and comment line
add Serialization class
renamed sx10Test to STest
fix compilation error
Merge branch 'develop' of github.com:scalegraph/scalegraph into develop
add AlgorithmTest
Merge branch 'feature/apiTest' into develop
fix a tiny error
rewrite CSVWriter