#168 setSeparator method should return CommandLine

Closes #168.

RELEASE-NOTES.adoc

@@ -3,10 +3,11 @@
 == 1.0.0 - (Work in progress) Public release
 
 * (Work in progress) #121 Added support for command line complete: picocli can generate bash completion scripts that generate completion matches based on `@Option` and `@Command` annotations.
+* #67 Support options for Map fields like `-Dkey1=val1 -Dkey2=val2`
 * #164 Support format patterns in version string and printVersionHelp
 * #166 Fixed bug where adjacent markup sections resulted in incorrect ANSI escape sequences
-* #167 Change `@Option(type=Class)` attribute from `Class` to `Class[]`
-* #67 Support options for Map fields like `-Dkey1=val1 -Dkey2=val2`
+* #167 Change `type` attribute from `Class` to `Class[]` for Map support
+* #168 API change: `CommandLine::setSeparator` method now returns this CommandLine (was void)
 
 == 0.9.8 - Bugfix and enhancements release for public review. API may change.
 

src/main/java/picocli/CommandLine.java

@@ -583,9 +583,11 @@ public String getSeparator() {
     }
 
     /** Sets the String the parser uses to separate option names from option values to the specified value.
-     * @param separator the String that separates option names from option values */
-    public void setSeparator(String separator) {
+     * @param separator the String that separates option names from option values
+     * @return this {@code CommandLine} object, to allow method chaining */
+    public CommandLine setSeparator(String separator) {
         interpreter.separator = Assert.notNull(separator, "separator");
+        return this;
     }
     private static boolean empty(String str) { return str == null || str.trim().length() == 0; }
     private static boolean empty(Object[] array) { return array == null || array.length == 0; }