GitLab

* fix bug: frame append should check itself

* more test case

* fix multi-send-recv bug

* remv msg graph and clean up

* test cases

* more test case

* fix for batchedgraph

* fix bugs: converting from a graph with edges

* fix

* add more operators to utils.Index

* clear frame executor

* change message indicator to a graph level index

* fix test cases

* guard the case that mxnet does not support concat zero shape tensor

* fix bug: avoid convert full slice to numpy

* test multi-send-recv after conversion

* fix as request (partially)

* add dtype, ctx to full_1d

* add slice data to utils.Index

* fix

* more doc string

* fix as requested