Rework private skins handling

 -add skin:is_applicable_for_player(playername) method
- hide private skins in unified_inventory since not supported
- check player assignment in skins.assign_player_skin() + inherited to skins.set_player_skin()

1 files changed, 5 insertions, 1 deletions

diff --git a/API.md b/API.md
index 0e6b293..ad0248b 100644
--- a/API.md
+++ b/API.md
@@ -72,7 +72,11 @@ The next metadata keys are usually filled
   - name - A name for the skin
   - author - The skin author
   - license - THe skin texture license
-  - assignment  - is "player:playername" in case the skin is assigned to be privat for a player
+  - assignment - (obsolete) is "player:playername" in case the skin is assigned to be privat for a player
+  - playername - Player assignment for private skin
 
 ## skin:get_meta_string(key)
 Same as get_meta() but does return "" instead of nil if the meta key does not exists
+
+## skin:is_applicable_for_player(playername)
+Check if a skin is applicable for the player "playername". Ususally the private skins could be applied to the player only