GitLab

* add convert.

* fix.

* add write_mag.

* fix convert_partition.py

* write data.

* use pyarrow to read.

* update write_mag.py

* fix convert_partition.py.

* load node/edge features when necessary.

* reshuffle nodes.

* write mag correctly.

* fix a bug: inner nodes in a partition might be empty.

* fix bugs.

* add verify code.

* insert reverse edges.

* fix a bug.

* add get node/edge data.

* add instructions.

* remove unnecessary argument.

* update distributed preprocessing.

* fix readme.

* fix.

* fix.

* fix.

* fix readme.

* fix doc.

* fix.

* update readme

* update doc.

* update readme.
Co-authored-by: Ubuntu <ubuntu@ip-172-31-9-132.us-west-1.compute.internal>
Co-authored-by: Ubuntu <ubuntu@ip-172-31-2-202.us-west-1.compute.internal>