Mention removed HashArray in release notes

.travis.yml

@@ -5,7 +5,8 @@ dist: trusty
 php:
   - 5.5
   - 5.6
-  - 7
+  - 7.0
+  - 7.1
   - hhvm
 
 sudo: false

RELEASE-NOTES.md

@@ -7,6 +7,11 @@ This release removes integers as acceptable entity IDs.
 #### Breaking changes
 * `Item::setId` and `Property::setId` do not accept integers any more.
 * Removed `Item::getSiteLinks` and `Item::hasSiteLinks`.
+* Removed `HashArray`.
+* `SnakList` does not extend `HashArray` any more. This removes the following public and protected
+  methods, or makes them private: `addElement`, `getByElementHash`, `getNewOffset`, `getObjectType`,
+  `hasElement`, `hasElementHash`, `hasValidType`, `preSetElement`, `removeByElementHash`,
+  `removeElement`, and `setElement`.
 * Added periods to the list of disallowed characters in `RepositoryNameAssert`.
 
 #### Other changes

phpcs.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0"?>
 <ruleset name="WikibaseDataModel">
-	<rule ref="vendor/wikibase/wikibase-codesniffer/Wikibase">
+	<rule ref="./vendor/wikibase/wikibase-codesniffer/Wikibase">
 		<exclude name="PSR2.Methods.MethodDeclaration" />
 	</rule>