Clear world now resets the world compatibility version.

Author: AliceLR

docs/changelog.txt

@@ -13,6 +13,7 @@ USERS
 + The softscale renderer now respects disable_screensaver.
 + HTML5: fixed the poor performance of FREADn and other features
   that rely on calculating the length of an open file.
++ Clear world (Alt+R) now resets the world version.
 + Setting a string offset, limit, or splice to FREADn now
   respects the provided limit. If n is larger than the limit,
   n total bytes will still be read (up to the maximum string

src/editor/edit.c

@@ -3909,7 +3909,6 @@ static void __edit_world(context *parent, boolean reload_curr_file)
       clear_world(mzx_world);
       clear_global_data(mzx_world);
     }
-    mzx_world->version = MZX_VERSION;
     mzx_world->active = 1;
 
     create_blank_world(mzx_world);

src/editor/world.c

@@ -458,6 +458,8 @@ void create_blank_world(struct world *mzx_world)
   // Make a blank board
   int i;
 
+  mzx_world->version = MZX_VERSION;
+
   mzx_world->num_boards = 1;
   mzx_world->num_boards_allocated = 1;
   mzx_world->board_list = cmalloc(sizeof(struct board *));