Updated release notes for latest bug fix

Author: bbottema

README.md

@@ -75,6 +75,11 @@ Simple Java Mail is available in [Maven Central](https://search.maven.org/#searc
 
 ### Latest Progress ###
 
+[v5.2.1](https://search.maven.org/#artifactdetails%7Corg.simplejavamail%7Csimple-java-mail%7C5.2.1%7Cjar) (TBA)
+
+- [#219](https://github.com/bbottema/simple-java-mail/issues/219) Bug: MimeMessageParser rejects attachments with duplicate names
+
+
 [v5.2.0](https://search.maven.org/#artifactdetails%7Corg.simplejavamail%7Csimple-java-mail%7C5.2.0%7Cjar) (7-July-2019)
 
 - [#213](https://github.com/bbottema/simple-java-mail/issues/213) Update from javax.mail:1.6.0 to jakarta.mail:1.6.3

RELEASE.txt

@@ -6,6 +6,11 @@ http://www.simplejavamail.org
     <version>5.2.0</version>
 </dependency>
 
+v5.2.1 (TBA)
+
+- #219: Bug: MimeMessageParser rejects attachments with duplicate names
+
+
 v5.2.0 (7-July-2019)
 
 - #213: Update from javax.mail:1.6.0 to jakarta.mail:1.6.3