updated release notes

Author: hneemann

README.md

@@ -77,7 +77,7 @@ The documentation also contains a list of available 74xx chips and a list of ava
 
 ## Translations ##
 
-So far Digital is available in English and German. If someone wants to add a 
+So far Digital is available in English, German 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 v0.22
+v0.22, released on 01. Apr 2019
 - Improved the RAM/ROM data loader. Now binary files and Intel HEX files are
   supported.
 - Added a RAM that can be synthesized on an FPGA using block RAM.