Update to Zig master

Author: fabioarnold

src/Enemy.zig

@@ -14,7 +14,7 @@ pub const Type = enum {
     pub fn jsonStringify(value: Type, options: std.json.StringifyOptions, out_stream: anytype) !void {
         _ = options;
         try out_stream.writeByte('"');
-        try out_stream.writeAll(std.meta.tagName(value));
+        try out_stream.writeAll(@tagName(value));
         try out_stream.writeByte('"');
     }
 };

src/Player.zig

@@ -20,7 +20,7 @@ pub const State = enum {
     pub fn jsonStringify(value: State, options: std.json.StringifyOptions, out_stream: anytype) !void {
         _ = options;
         try out_stream.writeByte('"');
-        try out_stream.writeAll(std.meta.tagName(value));
+        try out_stream.writeAll(@tagName(value));
         try out_stream.writeByte('"');
     }
 };

src/main.zig

@@ -54,7 +54,7 @@ const GameState = enum {
     pub fn jsonStringify(value: GameState, options: std.json.StringifyOptions, out_stream: anytype) !void {
         _ = options;
         try out_stream.writeByte('"');
-        try out_stream.writeAll(std.meta.tagName(value));
+        try out_stream.writeAll(@tagName(value));
         try out_stream.writeByte('"');
     }
 };