New SMTP Layer integrated with Trojita’s Streams Layer; Improve UI

by Karan Luthra for KDE

The project aims at improving the SMTP layer by rewriting the classes to better integrate with Trojita's lower classes' capabilities and give features that accommodate more use-cases. A second goal is to improve UI of the desktop application, and write many missing features essential for the application to be more usable and a step closer to version 1.0