Node-graph

What's Changed
* fix circular import when using entry points by superstar54 in https://github.com/scinode/node-graph/pull/22


**Full Changelog**: https://github.com/scinode/node-graph/compare/v0.1.1...v0.1.2

What's Changed
* Use group inputs and outputs when creating Node by superstar54 in https://github.com/scinode/node-graph/pull/21


**Full Changelog**: https://github.com/scinode/node-graph/compare/v0.1.0...v0.1.1

What's Changed
* Add SocketNamespace by superstar54 in https://github.com/scinode/node-graph/pull/20


**Full Changelog**: https://github.com/scinode/node-graph/compare/v0.0.20...v0.1.0

What's Changed
* rename `nt` to `ng`, add `_executor` attribute by superstar54 in https://github.com/scinode/node-graph/pull/19


**Full Changelog**: https://github.com/scinode/node-graph/compare/v0.0.19...v0.0.20

What's Changed
* Refactor node data, do not pickle node_class, create the node on the fly by superstar54 in https://github.com/scinode/node-graph/pull/18


**Full Changelog**: https://github.com/scinode/node-graph/compare/v0.0.18...v0.0.19

What's Changed
* Refactor property, avoid duplicate by superstar54 in https://github.com/scinode/node-graph/pull/17


**Full Changelog**: https://github.com/scinode/node-graph/compare/v0.0.17...v0.0.18