Co-authored-by: Ubuntu <ubuntu@ip-172-31-28-63.ap-northeast-1.compute.internal>
Co-authored-by: Steve <ubuntu@ip-172-31-34-29.ap-northeast-1.compute.internal>
* add seal example * 1. add paper infomation in examples/README 2. adjust codes 3. option test * use latest `to_simple` to replace coalesce graph function * remove outdated codes * remove useless comment