Defines a new package called package. Each of options should be one of the following:

(:nicknames {package-name}*)

(:size <integer>)

(:shadow {symbol-name}*)

(:shadowing-import-from <package-name> {symbol-name}*)

(:use {package-name}*)

(:import-from <package-name> {symbol-name}*)

(:intern {symbol-name}*)

(:export {symbol-name}*)

(:documentation doc-string)

All options except :size and :documentation can be used multiple times.