doc: fetch maps variables without an image to 0 (#518)
chg: require a type for all procedure arguments, warn otherwise
fix: possible seg fault in factorization
Merge pull request #396 from mmklee/bug_fac

fix: possible seg fault in factorization
add: nameof for blackbox types
chg: new version of schubert.lib
chg: list of new libs
chg: allow objects of type def in Eval (ssi)
chg: return unresolved names as def