sdm was inspired by posts by @HawaiianPi and @sakaki in the Raspberry Pi Forum: STICKY: Making your own custom burn-n-boot Raspbian image.
The sdm documentation reorg inspired by feedback from github user @mcguirepr89.
Thanks to @dshaw619 and @tiefenauer for their wonderful suggestions and patience.
Thanks to @tinker2much for his in-depth Doc reviews and testing of the new plugins.
And thanks to the many other users who have provided constructive feedback and patiently worked with me to resolve problems.
Thanks!