FXRoute 1.0 Beta 4

Fourth public beta.

Headline fix: fresh Armbian installs now re-create a git checkout on first boot, so Maintenance updates work out of the box like on ISO installs.

Raspberry Pi 4/5 images are attached below (with .sha256 checksums).

x86_64 openSUSE Leap 16 ISO (via SourceForge):
https://sourceforge.net/projects/fxroute/files/1.0-beta4/fxroute-1.0-beta4-x86_64-leap16.iso/download

Web demo: https://cobbycode.github.io/fxroute/
Installer and details: see README.