####v1.0.5
[ENHANCEMENT] Added Attachment usage example to documentation #5
####v1.0.4
[FIX] Some private methods changed to protected. Fixed attechment stream 2028 characters issue #4
####v1.0.3
[FIX] Added parts variable. Variable was not declared which can lead to annoying error messages in logs #3
[FIX] Removed unused pivate getPartHeader() method
####v1.0.2
[FEATURE] Added required extensions to composer #2
####v1.0.1
[FIX] Corrects an issue with getting the 'text' body in some instances #1