1. Advanced indexing: https://github.com/apache/incubator-mxnet/pull/8246 (Jun)
2. slice operator supporting parameter step: https://github.com/apache/incubator-mxnet/pull/8558 (Jun)
3. PR 8489 - https://github.com/apache/incubator-mxnet/pull/8489 (Eric)
4. License Headers: https://github.com/apache/incubator-mxnet/issues/7749 (Meghna)