Adds 1.3.0.0 release notes (#293)

* Adds 1.3.0.0 release notes

Signed-off-by: Robert Downs <downsrob@amazon.com>

release-notes/opensearch-index-management.release-notes-1.3.0.0.md

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+## Version 1.3.0.0 2022-03-08
+
+Compatible with OpenSearch 1.3.0
+
+### Features
+* Continuous transforms ([#206](https://github.com/opensearch-project/index-management/pull/206))
+* Refactor IndexManagement to support custom actions ([#288](https://github.com/opensearch-project/index-management/pull/288))
+
+### Enhancements
+* Adds default action retries ([#212](https://github.com/opensearch-project/index-management/pull/212))
+* Adds min rollover age as a transition condition ([#215](https://github.com/opensearch-project/index-management/pull/215))
+* Adds min primary shard size rollover condition to the ISM rollover action ([#220](https://github.com/opensearch-project/index-management/pull/220))
+* Not managing indices when matched certain pattern ([#255](https://github.com/opensearch-project/index-management/pull/255/files))
+* Show applied policy in explain API ([#251](https://github.com/opensearch-project/index-management/pull/251))
+
+### Bug Fixes
+* Successful deletes of an index still adds history document ([#160](https://github.com/opensearch-project/index-management/pull/160))
+* Porting missing bugfixes ([#232](https://github.com/opensearch-project/index-management/pull/181))
+* ISM Template Migration ([#237](https://github.com/opensearch-project/index-management/pull/237))
+* Fixes flaky tests ([#211](https://github.com/opensearch-project/index-management/pull/211))
+* Fixes flaky rollup/transform explain IT ([#247](https://github.com/opensearch-project/index-management/pull/247))
+* Avoids restricted index warning check in blocked index pattern test ([#263](https://github.com/opensearch-project/index-management/pull/263))
+* Porting missing logic ([#240](https://github.com/opensearch-project/index-management/pull/240))
+* Fixes flaky continuous transforms test ([#276](https://github.com/opensearch-project/index-management/pull/276))
+* Porting additional missing logic ([#275](https://github.com/opensearch-project/index-management/pull/275))
+* Fixes test failures with security enabled ([#292](https://github.com/opensearch-project/index-management/pull/292))
+
+### Infrastructure
+* Add support for codeowners to repo ([#195](https://github.com/opensearch-project/index-management/pull/195))
+* Adds test and build workflow for mac and windows ([#210](https://github.com/opensearch-project/index-management/pull/210))
+* Adding debug log to log the user object for all user callable transport actions ([#166](https://github.com/opensearch-project/index-management/pull/166))
+* Added ISM policy backwards compatibility test ([#181](https://github.com/opensearch-project/index-management/pull/181))
+* Add backport and auto delete workflow ([#283](https://github.com/opensearch-project/index-management/pull/283))
+* Updates integTest gradle scripts to run via remote cluster independently ([#291](https://github.com/opensearch-project/index-management/pull/291))
+
+### Documentation
+* Add roadmap badge in README ([#295](https://github.com/opensearch-project/index-management/pull/295))
+
+### Maintenance
+* Updating license headers ([#196](https://github.com/opensearch-project/index-management/pull/196))
+* Configure WhiteSource for github.com ([#244](https://github.com/opensearch-project/index-management/pull/244))
+* Upgrades detekt version to 1.17.1 ([#252](https://github.com/opensearch-project/index-management/pull/252))
+* Changes integ test java version from 14 to 11 ([#284](https://github.com/opensearch-project/index-management/pull/284))
+