EmailIt: First Release for 2.0

This is the release of version 2.0.0 of EmailIt. It is a full application without any outside application needed to run. It connects to gmail and other hosts for sending emails, it now sends in both HTML and plain text, does Handlebars expansion on the email before converting to HTML and plain text, ten notepads, scripts to run on text, templates, script terminal, and more. The starting on a new system now works (sorry if you experienced issues with that).

Currently, only GitHub downloading of scripts and themes isn't working, but I felt this release was necessary since first start on a new system on compromised. If you did have difficulties starting on a fresh system, please delete the ~/.config/EmailIt directory before launching this new build.

This build has been tested on an Intel based system and a M1 base macOS system. I still don't have an available Windows system to build and test the program.