Support for Short

[jcmartin]

x86 supports 16-bit literals and registers. However, Stanza currently has no native support for 16-bit. The canonical C term for this is short. I propose that Stanza adds a new type Short for 16-bit integers.

The main use case I have for this is support Unicode, specifically UTF-16. UTF-16 is often needed for parsing modern websites. A possible consequence is that Stanza may choose to borrow Unicode for many syntax symbols such as -> and :>, allowing the programmer to use Unicode in his or her program.