Deep update documentation beginnings
add TODO section for GitHub approach
Minor edits
Core will be running Tinker after deep update
deep update documentation for internal previewing
deep update tiny tweaks
spark-cli before dfu-util docs and elaborate
tweaked deep update docs
missing "s" for "device" api call
Fixing Zach comments #ref 13433077528738
Merge remote-tracking branch 'origin/master' into feature/deep_update
Merge branch 'feature/deep_update'