Added 20.7 release notes

Author: Marat-Gumerov

README.md

@@ -20,12 +20,12 @@ Aspose.Email Cloud is a REST API for creating email applications that work with
 - Email configuration discovery
 - Disposable email address detection
 
-## New features in version 20.5
-- [Manipulating message threads using Aspose.Email Cloud build-in client](https://docs.aspose.cloud/display/emailcloud/Email+Client+Threads)
-- [File converters](https://docs.aspose.cloud/display/emailcloud/Convert+Email%2C+Calendar+and+Contact+Files):
-    - EmailDto<->EML<->MSG<->MHTML
-    - ContactDto<->VCard VCF<->MapiContact MSG
-    - CalendarDto<->iCalendar ICS<->MapiCalendar MSG
+## New features in version 20.7
+- New MAPI message files API with models:
+    - `MapiMessageDto` - represents the Microsoft Outlook message.
+    - `MapiCalendarDto` - represents the Microsoft Outlook calendar object.
+    - `MapiContactDto` - represents the Microsoft Outlook contact information. 
+- Improved Recurrence pattern support for CalendarDto.
 
 See [Release notes](https://docs.aspose.cloud/display/emailcloud/Aspose.Email+Cloud+20.5+Release+Notes)