Initial MementoEmbed Linux Installers for third-party Testing

This release contains the latest version of MementoEmbed and includes the following files:

• .rpm file - a CentOS 8 installer
• .src.rpm file - a source RPM for use on RPM-compliant systems like RedHat and CentOS
• .deb file - an Ubuntu 21.04 installer
• .sh file - a generic Unix (including macOS) installer -- not as user-friendly or consistent as the .rpm or .deb
• .tar.gz - a .git-free source code bundle

To determine which file to use or how to use it, please read the installation instructions.

If you have a problem with MementoEmbed, please report the issue.