raylib-d how to program a simple moving circle.

[Alain De Vos]

After installing raylib library on Debian ,
https://github.com/raysan5/raylib/releases

Running "dub run" i get now the error :

```

dub run
Fetching raylib-d 5.5.1 (getting selected version)...
Performing "debug" build using /usr/bin/gdc for x86_64.
raylib-d 5.5.1: building configuration "library"...
/home/x/.dub/packages/raylib-d-5.5.1/raylib-d/source/raylib/raylib_types.d:231:25: error: found ‘:’ when expecting ‘)’
   231 |         return Vector2(x:(x + width), y:y);
       |                         ^
/home/x/.dub/packages/raylib-d-5.5.1/raylib-d/source/raylib/raylib_types.d:231:40: error: found ‘:’ when expecting ‘;’ following `return` statement
   231 |         return Vector2(x:(x + width), y:y);
       |                                        ^
/home/x/.dub/packages/raylib-d-5.5.1/raylib-d/source/raylib/raylib_types.d:231:42: error: found ‘)’ when expecting ‘;’ following statement
   231 |         return Vector2(x:(x + width), y:y);
       |                                          ^
/home/x/.dub/packages/raylib-d-5.5.1/raylib-d/source/raylib/raylib_types.d:231:42: error: found ‘)’ instead of statement
   231 |         return Vector2(x:(x + width), y:y);
       |                                          ^
/home/x/.dub/packages/raylib-d-5.5.1/raylib-d/source/raylib/raylib_types.d:235:25: error: found ‘:’ when expecting ‘)’
   235 |         return Vector2(x:x, y:(y + height));
       |                         ^
/home/x/.dub/packages/raylib-d-5.5.1/raylib-d/source/raylib/raylib_types.d:235:26: error: found ‘x’ when expecting ‘;’ following `return` statement
   235 |         return Vector2(x:x, y:(y + height));
       |                          ^
/home/x/.dub/packages/raylib-d-5.5.1/raylib-d/source/raylib/raylib_types.d:235:27: error: found ‘,’ instead of statement
   235 |         return Vector2(x:x, y:(y + height));
       |                           ^
/home/x/.dub/packages/raylib-d-5.5.1/raylib-d/source/raylib/raylib_types.d:239:25: error: found ‘:’ when expecting ‘)’
   239 |         return Vector2(x:(x + width), y:(y + height));
       |                         ^
/home/x/.dub/packages/raylib-d-5.5.1/raylib-d/source/raylib/raylib_types.d:239:40: error: found ‘:’ when expecting ‘;’ following `return` statement
   239 |         return Vector2(x:(x + width), y:(y + height));
       |                                        ^
/home/x/.dub/packages/raylib-d-5.5.1/raylib-d/source/raylib/raylib_types.d:239:53: error: found ‘)’ when expecting ‘;’ following statement
   239 |         return Vector2(x:(x + width), y:(y + height));
       |                                                     ^
/home/x/.dub/packages/raylib-d-5.5.1/raylib-d/source/raylib/raylib_types.d:239:53: error: found ‘)’ instead of statement
   239 |         return Vector2(x:(x + width), y:(y + height));
       |                                                     ^
/home/x/.dub/packages/raylib-d-5.5.1/raylib-d/source/raylib/raylib_types.d:243:25: error: found ‘:’ when expecting ‘)’
   243 |         return Vector2(x:(x + width/2.0f), y:(y + 
height/2.0f));
       |                         ^
/home/x/.dub/packages/raylib-d-5.5.1/raylib-d/source/raylib/raylib_types.d:243:45: error: found ‘:’ when expecting ‘;’ following `return` statement
   243 |         return Vector2(x:(x + width/2.0f), y:(y + 
height/2.0f));
       |                                             ^
/home/x/.dub/packages/raylib-d-5.5.1/raylib-d/source/raylib/raylib_types.d:243:63: error: found ‘)’ when expecting ‘;’ following statement
   243 |         return Vector2(x:(x + width/2.0f), y:(y + 
height/2.0f));
       |                                                           
     ^
/home/x/.dub/packages/raylib-d-5.5.1/raylib-d/source/raylib/raylib_types.d:243:63: error: found ‘)’ instead of statement
   243 |         return Vector2(x:(x + width/2.0f), y:(y + 
height/2.0f));
       |                                                           
     ^
/usr/bin/gdc failed with exit code 1.

```