Zelda Classic 2.54, Alpha 9

//Alpha 9

Fixed all one-input, one-return NPCData functions. ( ZoriaRPG, 28th October, 2017 )

Added switch-case to the ZScript syntax.
Added constant expressions to the ZScript parser.
Added array declaration sizing with constant expressions. ( Grayswandir, 27th October, 2017 )

//Alpha 8

Disabled all new pointer types, except for bitmap. They seem to have a clash when sharing a table with a global pointer. ( ZoriaRPG, 27th October, 2017 )

Added ZScript pointer objects and RefVars: bitmap, npcdata, spritedata, mapdata, combodata and screendata (unused). These
correspond to Graphics->, NPCData->, SpriteData->, MapData->, and ComboData-> (respectively).
The screendata type would probably mate with Screen->. Declaring these types now works, and calling functions seems to work both from the typed pointer, and the global pointer for each, so BOTH of these work:
npcdata n; int x = n->GetVar();
int x = NPCData->GetVar.
Next, I'll need to add LoadData() functions for each class, and variables/indexed variables for them. ( ZoriaRPG, 27th October, 2017 )

Fixed issue with ZQuest crashing when compiled with MSVC. ( Grayswandir, 27th October, 2017 )
Added string literals. These work only at script/function scope. Global scope of string literals is forbidden. ( Grayswandir, 27th October, 2017 )