Release notes for 1.0.0.0 (#96)

Author: thalurur

release-notes/opensearch-index-management.release-notes-1.0.0.0.md

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+## Version 1.0.0.0 2021-07-12
+
+Compatible with OpenSearch 1.0.0
+
+### Infrastructure
+
+* Update issue template with multiple labels ([#10](https://github.com/opensearch-project/index-management/pull/10))
+
+### Maintenance
+
+* Renaming Namespaces ([#14](https://github.com/opensearch-project/index-management/pull/14))
+* Rest APIs Backward Compatibility ([#15](https://github.com/opensearch-project/index-management/pull/15))
+* Settings Backwards Compatibility ([#16](https://github.com/opensearch-project/index-management/pull/16))
+* Point to correct version of notification ([#18](https://github.com/opensearch-project/index-management/pull/18))
+* Enable security plugin integrated tests ([#93](https://github.com/opensearch-project/index-management/pull/93))
+
+### Features
+
+* Adds support for Transform feature ([#17](https://github.com/opensearch-project/index-management/pull/17))
+
+### Enhancements
+
+* Improve integration with data streams ([#13](https://github.com/opensearch-project/index-management/pull/13))
+* Skip rollover on non-write indices ([#88](https://github.com/opensearch-project/index-management/pull/88))
+
+### Documentation 
+
+* Update and add documentation files ([#84](https://github.com/opensearch-project/index-management/pull/84))
+
+### Bug Fixes
+
+* Fix 7.10 rollover blocking thread issue ([#70](https://github.com/opensearch-project/index-management/pull/70))
+* Fix issue with Rollup start/stop API ([#79](https://github.com/opensearch-project/index-management/pull/79))
+* Fix to support custom source index type in Rollup jobs ([#4](https://github.com/opensearch-project/index-management/pull/4))