Update release notes, refs pmd#1060

Closes pmd#1004

docs/pages/release_notes.md

@@ -114,6 +114,10 @@ from the comunity during the processm but if you have a legitimate use case for
     that are annotated with `javax.inject.Inject`. Additionally, it detects now also unnecessary private constructors
     in enums.
 
+*   The Java rule [`ControlStatementBraces`](pmd_rules_java_codestyle.html#controlstatementbraces) (`java-codestyle`)
+    supports a new boolean property `checkSingleIfStmts`. When unset, the rule won't report if statements which lack
+    braces, if the statement is not part of an `if ... else if` chain. This property defaults to true.
+
 ### Fixed Issues
 
 *   all
@@ -137,6 +141,7 @@ from the comunity during the processm but if you have a legitimate use case for
 *   java-codestyle
     *   [#1003](https://github.com/pmd/pmd/issues/1003): \[java] UnnecessaryConstructor triggered on required empty constructor (Dagger @Inject)
     *   [#1023](https://github.com/pmd/pmd/issues/1023): \[java] False positive for useless parenthesis
+    *   [#1004](https://github.com/pmd/pmd/issues/1004): \[java] ControlStatementBraces is missing checkIfStmt property
 *   java-errorprone
     *   [#629](https://github.com/pmd/pmd/issues/629): \[java] NullAssignment false positive
     *   [#816](https://github.com/pmd/pmd/issues/816): \[java] SingleMethodSingleton false positives with inner classes