[BUG] schematic format version is greater than supported version

[vivi90]

I wanted to try out your tool and ran into this error message:

[vivien@vivien-nb ~]$ npx -p github:cho45/kicad-utils kicad-utils sch2svg /path/to/file.sch

/home/vivien/.npm/_npx/36935/lib/node_modules/kicad-utils/dist/src/kicad_sch.js:61
            throw "schematic format version is greater than supported version: " +
            ^
schematic format version is greater than supported version: 4>2
(Use `node --trace-uncaught ...` to show where the exception was thrown)

Some Information, that may help:

• Eeschema header: EESchema Schematic File Version 4
• KiCad version: 5.1.8
• npx version: 6.14.9
• node version: 15.4.0
• Linux kernel: 5.10.2-2-MANJARO

[TreeGrow]

The kICad version for this project is 4.0.0