Replace 'byte' with 'ubyte'.

[quickfur]

Because 'y' is unsigned in the DBus spec.

Fixes issue #49

[WebFreak001]

there are more uses of byte in all files, need to change those as well

[WebFreak001]

in thin.d there is a breaking change with toString now returning an unsigned number if stored as int8, but as this is closer to the spec it makes sense.

Here is the diff what I did in that file:

diff --git a/source/ddbus/thin.d b/source/ddbus/thin.d
index 727bf59..7be360c 100644
--- a/source/ddbus/thin.d
+++ b/source/ddbus/thin.d
@@ -222,7 +222,8 @@ struct DBusAny {

   union {
     ///
-    byte int8;
+    ubyte uint8;
+    deprecated("use uint8 instead") byte int8;
     ///
     short int16;
     ///
@@ -273,8 +274,8 @@ struct DBusAny {
    +/
   this(T)(T value) {
     static if (is(T == byte) || is(T == ubyte)) {
-      this(typeCode!byte, null, false);
-      int8 = cast(byte) value;
+      this(typeCode!ubyte, null, false);
+      uint8 = cast(ubyte) value;
     } else static if (is(T == short)) {
       this(typeCode!short, null, false);
       int16 = cast(short) value;
@@ -410,8 +411,8 @@ struct DBusAny {
   string toString() const {
     string valueStr;
     switch (type) {
-    case typeCode!byte:
-      valueStr = int8.to!string;
+    case typeCode!ubyte:
+      valueStr = uint8.to!string;
       break;
     case typeCode!short:
       valueStr = int16.to!string;
@@ -712,7 +713,7 @@ unittest {
     b.toString();
   }

-  test(cast(ubyte) 184, set!"int8"(DBusAny('y', null, false), cast(byte) 184));
+  test(cast(ubyte) 184, set!"uint8"(DBusAny('y', null, false), cast(byte) 184));
   test(cast(short) 184, set!"int16"(DBusAny('n', null, false), cast(short) 184));
   test(cast(ushort) 184, set!"uint16"(DBusAny('q', null, false), cast(ushort) 184));
   test(cast(int) 184, set!"int32"(DBusAny('i', null, false), cast(int) 184));
@@ -726,7 +727,7 @@ unittest {
   test(cast(ubyte[])[1, 2, 3], set!"binaryData"(DBusAny('a', ['y'], false),
       cast(ubyte[])[1, 2, 3]));

-  test(variant(cast(ubyte) 184), set!"int8"(DBusAny('y', null, true), cast(byte) 184));
+  test(variant(cast(ubyte) 184), set!"uint8"(DBusAny('y', null, true), cast(byte) 184));
   test(variant(cast(short) 184), set!"int16"(DBusAny('n', null, true), cast(short) 184));
   test(variant(cast(ushort) 184), set!"uint16"(DBusAny('q', null, true), cast(ushort) 184));
   test(variant(cast(int) 184), set!"int32"(DBusAny('i', null, true), cast(int) 184));

[quickfur]

OK, should be fixed now.