Use less restric rules for autoActivation

When Auto-activation is enabled in the  TextEditor, this should make so that the auto-completion
popup appears mid-word after the default 300ms delay

Author: tferr

src/main/java/org/scijava/plugins/scripteditor/jython/JythonAutocompletionProvider.java

@@ -57,6 +57,7 @@ public JythonAutocompletionProvider(final RSyntaxTextArea text_area, final Impor
 		this.text_area = text_area;
 		this.formatter = formatter;
 		this.setParameterizedCompletionParams('(', ", ", ')'); // for methods and functions
+		setAutoActivationRules(true, "."); // when using auto-activation, make it so that it occurs after any letter or '.'
 		new Thread(ClassUtil::ensureCache).start();
 	}