Update text files for 3.4.2RC1

PKG-INFO

@@ -1,7 +1,7 @@
 Metadata-Version: 1.0
 Name: SABnzbd
-Version: 3.4.1
-Summary: SABnzbd-3.4.1
+Version: 3.4.2RC1
+Summary: SABnzbd-3.4.2RC1
 Home-page: https://sabnzbd.org
 Author: The SABnzbd Team
 Author-email: team@sabnzbd.org

README.mkd

@@ -1,6 +1,13 @@
-Release Notes - SABnzbd 3.4.1
+Release Notes - SABnzbd 3.4.2 Release Candidate 1
 =========================================================
 
+## Bugfixes since 3.4.1
+- Crash when `.par2` files were missing during download.
+- Prevent scanning the whole file to identify the correct extension.
+- `.rXX` extensions were renamed to `.rXX.rar`.
+- Processing unpacked `.par2` files would also process source
+  `.par2` files and could result in duplicate (`.1`) filenames.
+
 ## Bugfixes since 3.4.0
 - macOS: Failed to run on M1 systems or older macOS versions.