2. Optimize the python api of graph and graph_processor
3. delete unconnected const and parameter nodes
4. fix subnode count bug and fix name scope node have not input and output bug
5. add cyclic graph and high degree graph json file
6. update parameter node to polymeric scope node
7. delele all deepcopy to improve performance
8. add data type and update the attribute scope of edge to independtend_layout
9. add add_parameter_nodes function
10. delete scope attribute in input and optimiza code
11. parse parameter data type and shape
12. fix ut and st for graph
13. fix pylint
14. fix pylint arguments-differ
15. add scope proxy node instead of node

Merge pull request !75 from 李鸿章/fix_linting

Merge pull request !86 from 李鸿章/fix_step_erased

Merge pull request !101 from liangyongxiong/master

Merge pull request !100 from wenkai/wkmaster0429

Merge pull request !98 from kouzhenzhong/rc0.2_release_notes

Merge pull request !55 from kouzhenzhong/rc0.2_release_notes

Merge pull request !95 from WeiFeng/master_ph

Merge pull request !85 from luopengting/lineage_record

Merge pull request !83 from luopengting/lineage_mixed

Merge pull request !84 from 潘慧/master_ph

Merge pull request !81 from luopengting/fix_pylint

Merge pull request !79 from liangyongxiong/master

Merge pull request !82 from 潘慧/master_ph

Merge pull request !78 from luopengting/datavisual_lpt

Merge pull request !77 from 潘慧/master_ph

Merge pull request !76 from 李鸿章/versioning

Merge pull request !74 from 潘慧/master_ph

Merge pull request !73 from 潘慧/master_ph

Merge pull request !72 from 潘慧/master_ph

Merge pull request !70 from wenkai/wk0423

Merge pull request !67 from wenkai/wk0422_3

Merge pull request !71 from 潘慧/master_ph

Merge pull request !69 from zhangyunshu/zys_utst

Merge pull request !68 from luopengting/lineage_device_num

Merge pull request !66 from wenkai/zhaoting1