Updating release notes for 1.1.0 release (#94)

Author: arsen-es

opendistro-elasticsearch-sql.release-notes

@@ -1,5 +1,17 @@
+## 2019-06-21, Version 1.1.0 (Current)
 
-## 2019-06-10, Version 1.0.0 (Current)
+### Notable Changes
+
+* Feature [#90](https://github.com/opendistro-for-elasticsearch/sql/issues/90): Elasticsearch 7.1.1 compatibility
+* Migration [#17](https://github.com/opendistro-for-elasticsearch/sql/issues/17): Finished integ test migration and deprecated Maven build.
+* Enhancement [#34](https://github.com/opendistro-for-elasticsearch/sql/issues/34): Detached request ID from SqlRequest object.
+
+* BugFix [#46](https://github.com/opendistro-for-elasticsearch/sql/issues/46): Multi-index queries require identical mappings for indices.
+* BugFix [#92](https://github.com/opendistro-for-elasticsearch/sql/issues/92): Improper handling of SELECT statement
+* BugFix [#93](https://github.com/opendistro-for-elasticsearch/sql/issues/93): Blank query causes IndexOutOfBoundsException
+
+
+## 2019-06-10, Version 1.0.0
 
 ### Notable Changes