Optional ReadonlycranOptional Readonlydaterelease date YYYY-MM-DD (drives the date cutoff and version ordering)
Optional Readonlydepsdeclared dependency to its version constraint (e.g. >= 1.0.0)
Optional Readonlyfnsexported function to its parameter names (use '...' for a variadic)
Optional Readonlys3S3 classes this version OWNS (must also be an exported function name in fns); see FnProp.S3Owner
Optional Readonlys4S4 classes this version OWNS (exported via exportClasses, need not be a function); see FnProp.S4Owner
one version of a package in a scenario: when it was released, which functions (with which parameters) it exports, and what it depends on