updated the release notes

Author: hneemann

README.md

@@ -79,7 +79,7 @@ The documentation also contains a list of available 74xx chips and a list of ava
 
 ## Translations ##
 
-So far Digital is available in English, German and Portuguese. If someone wants to add a 
+So far Digital is available in English, German, Spanish and Portuguese. If someone wants to add a 
 new translation, please let me [know](mailto:digital-simulator@web.de).
 I can provide you with a special file for translation. This file is much easier to 
 translate than the [files](https://github.com/hneemann/Digital/blob/master/src/main/resources/lang) 

distribution/ReleaseNotes.txt

@@ -1,6 +1,6 @@
 Release Notes
 
-head, planned as v0.23
+v0.23, released on 23. Aug. 2019
 - Added generic circuits. Now it is possible to parameterize a sub circuit.
   Allows e.g. the creation of a barrel-shifter with selectable bit width.
 - Circuit analyser is now able to analyse the built-in counters.
@@ -12,6 +12,7 @@ head, planned as v0.23
 - Hex reader/writer supports RLE encoding like Logisim does.
 - Added Spanish translation. Special thanks to Ángel Millán who provided
   the translation.
+- Added a simple interactive beginners tutorial.
 - Added a statistics dialog which shows the number of used components.
 - Added scrollbars.
 - Multiple break components are allowed.