This is a minor release that builds on existing capability without introducing breaking changes.
optOrEnvVar
first looks up a name’s value firrst as a option, then as an environment variable if the option value is unset or empty (string or vector).setff
invocation can take several forms, and more extensive variable search can be performed; name for accessor function can be interpreted as name to lookup exactly, as uppercase, or as lowercase according to optOrEnvVar
.setff
is now called path
rather than location
.