“-do-not-delete” flag for savetiddlers command was introduced in 5.1.10
without consistency with the already implemented “noclean” flag for the
rendertiddlers command
This change is likely to break most existing scripts that call
TiddlyWiki.
TL;DR - output paths are now relative to the editions/output folder,
rather than to the current folder
See [[Notes for upgrading to 5.0.11-beta]] for details.