add SString: fast light weight string
add Config class
modify PageRank api!
Implement PageRank api with new design
CSV Reader is WIP
CSV Reader is WIP 2
CSV Reader is WIP. 3
CSV Reader is WIP 4
add missing files
add some method to sstring
Merge remote-tracking branch 'origin/feature/sstring' into feature/sstring
fix some compilation errors
some change sstring
Merge remote-tracking branch 'origin/feature/sstring' into feature/sstring
some CE fix
temporary commit to merge
Merge remote-tracking branch 'origin/feature/sstring' into feature/sstring
fix compilation error
Add API for Degree Distribution, add Example for Degree distribution
add license header to degree distribution example