In Penknife: Made pkGetLeaves() and pkMapLeaves() reach into function closures. Replaced pkIsLeaf() with pkIsStruct(). Decided the inner values and unwrapped values of nonlinear-as-linear values should be nonlinear. Fixed pkGetArgs() and pkReconstruct() when the argument is nil. Replaced the word "reconstruct" with "rebuild."
In Penknife: Made pkGetLeaves() and pkMapLeaves() reach into function closures. Replaced pkIsLeaf() with pkIsStruct(). Decided the inner values and unwrapped values of nonlinear-as-linear values should be nonlinear. Fixed pkGetArgs() and pkReconstruct() when the argument is nil. Replaced the word "reconstruct" with "rebuild."

rocketnia/era-cene,rocketnia/era,era-platform/cene,rocketnia/era-cene,era-platform/cene,rocketnia/era,rocketnia/era-cene,rocketnia/era,era-platform/cene