v1.3.0

• Support read receipts #149
  • Check if a message contains a read receipt request with MimeMessage.isReadReceiptRequested
  • Generate a read request response with MessageBuilder.buildReadReceipt()
• Support Windows-1256 encoding
• Add another message as an attachment with MessageBuilder.addMessagePart() #153
• Easily retrieve all leaf parts after loading BODYSTRUCTURE with MimeMessage.body.allLeafParts
• Fix for responses with a line break spread around 2 chunks #140
• Improve identification of message parts with their fetchId #141 #143 - Thanks to A.Zulli again!
• Messages are now send with utf-8 rather than utf8 to reduce problems #144 - Thanks to gmalakov
• Fix for responses with a literal {0} response #145
• Better detection of plain text messages thanks to castaway