query node
[Feature] Add degree recorder of seed
Merge branch 'master' of https://github.com/ryaninhust/sampling
[Fix] Fix the dulipcate node adding
Merge branch 'master' of https://github.com/ryaninhust/sampling
[Fix] Fix index/name bug
Merge branch 'master' of https://github.com/ryaninhust/sampling
[Feature] Add core
Global Graph
Merge pull request #3 from ranyu/master

query node
[Feature] Add query module
[Feature] delete valide.py
Merge branch 'master' of https://github.com/ryaninhust/sampling
[Fix] Fix seed return
[Feature] Add algorithm example and rerrange egraphs
[Fix] Big Fix to kill bug
Merge branch 'master' of https://github.com/ryaninhust/sampling
[Add] add algorithm random jump, forest fire, snow ball