Merge pull request #82 from nix-community/kernel-override

only mention rpi-kernels when overriding kernel

Merge pull request #38 from nix-community/example-config-check

add example image to packages and CI

Merge pull request #22 from MinerSebas/zstd-compressionn

Also dont use zstd for firmware compression

remove references to unpinned kernel

bump flake

add example link to readme

increase default firmware partition size