Update History and Readme for release 0.18.0

Signed-off-by: Daniel Chaffelson <[email protected]>

Author: Chaffelson

README.rst

@@ -93,7 +93,7 @@ Background and Documentation
 NiFi Version Support
 --------------------
 
-| Currently we are testing against NiFi versions 1.1.2 - 1.13.2, and NiFi-Registry versions 0.1.0 - 0.8.0.
+| Currently we are testing against NiFi versions 1.1.2 - 1.15.0, and NiFi-Registry versions 0.1.0 - 1.15.0.
 | If you find a version compatibility problem please raise an `issue <https://github.com/Chaffelson/nipyapi/issues>`_
 
 Python Requirements

docs/history.rst

@@ -2,6 +2,17 @@
 History
 =======
 
+0.18.0 (2021-11-29)
+-------------------
+
+| Updated client for NiFi & Registry 1.15.0 release
+
+* Moved testing to secured single user by default for NiFi
+* Consolidated clients to the 1.15.0 release version for both NiFi and Registry
+* Updated logic to support changed working modes in tests
+* Corrected minor functional issues for 1.15 in login handling, SSL certs, Parameter Updates and Testing
+* Backwards compatibility and Regression tested as requiring no breaking changes
+
 0.17.1 (2021-10-21)
 -------------------