Corrected Glyph.Advance type

src/Graphics/Glyph.cs

@@ -14,7 +14,7 @@ namespace Graphics
         public struct Glyph
         {
             /// <summary>Offset to move horizontically to the next character</summary>
-            public int Advance;
+            public float Advance;
 
             /// <summary>Bounding rectangle of the glyph, in coordinates relative to the baseline</summary>
             public FloatRect Bounds;