support unions (right now 0-1 fields parsed as struct)
\\\n escapes in strings aren't handled in the console
look into what String is, and whether to bridge it
+the console frontend's error handling, well, doesn't
+setup a default hook mechanism for ffi_call passthrough
+some JS callbacks don't use exception pointers at all...
+a newline needs to not be allowed after a unary *
+finish implementing default xml namespace statement