Ready for ea+6 release

Author: Tobias-Kohn

CHANGELOG.md

@@ -1,7 +1,7 @@
 # Changelog
 
 
-### 3.0 Early Access Preview 6 (coming soon)
+### 3.0 Early Access Preview 6 (24 September 2020)
 
 Implemented:
 - Simple notebooks to work with Python interactively;
@@ -19,6 +19,13 @@ Changes:
 Bug fixes:
 - Correctly handles text sizes beyond 8 KB;
 
+Known issues:
+- Starting a TigerJython instance for execution is slow and should be done ahead of time to make it 
+  more responsive;
+- Documents should not be synchronised with files on the disc automatically;
+- TigerJython's special functions are not yet fully supported;
+- Missing support for executing programs on external devices; 
+
 
 ### 3.0 Early Access Preview 5 (30 May 2020)
 

README.md

@@ -2,7 +2,7 @@
 
 TigerJython is an educational development environment for Python with enhanced error messages.  It runs on the Java 
 Virtual Machine and already includes [Jython](https://www.jython.org/).  If you have JRE installed, just download 
-the [JAR-file](https://github.com/Tiger-Jython/TigerJython/releases/download/v3.0-ea%2B5/TigerJython3-ea+5.jar) under 
+the [JAR-file](https://github.com/Tiger-Jython/TigerJython/releases/download/v3.0-ea%2B5/TigerJython3-ea+6.jar) under 
 [**release**](https://github.com/Tiger-Jython/TigerJython/releases/latest).
 
 > This is an early access version that is not yet ready for classroom use!!!

src/main/scala/tigerjython/ui/notebook/NotebookTab.scala

@@ -111,7 +111,9 @@ class NotebookTab extends TabFrame with ExecutionController {
   def appendToErrorOutput(s: String): Unit = {}
 
   protected def createOutputPane: TextArea = {
-    new TextArea()
+    val result = new TextArea()
+    result.getStyleClass.add("output-pane")
+    result
   }
 
   protected def createTargetMenuItem(name: String, img: Image, factory: ExecutorFactory): MenuItem = {