Builtin Functions

  [Values]        len()             func/type()
  [Conversions]   bool()            int()              float()
                  str()             list()             dict()
                X runes()         X encodeRunes()
                X bytes()         X encodeBytes()
  [Str]         X strcmp()          shSplit()
  [List]          join()       
  [Dict]          keys()            values()           get()       
  [Float]         floatsEqual()   X isinf()          X isnan()
  [Obj]           first()           rest()             get()
  [Word]          glob()            maybe()
  [Serialize]     toJson()          fromJson()
                  toJson8()         fromJson8()
                X toJ8Line()      X fromJ8Line()
  [Pattern]       _group()          _start()           _end()
  [Reflection]    func/eval()       func/evalExpr()  
  [Introspect]    shvarGet()        getVar()           setVar()  
                  parseCommand()  X parseExpr()      X bindFrame()
  [Hay Config]    parseHay()        evalHay()
X [Hashing]       sha1dc()          sha256()
