max 3 skills

server/src/vbox.rs

@@ -582,7 +582,7 @@ pub fn vbox_apply(params: VboxApplyParams, tx: &mut Transaction, account: &Accou
             let skill = var.into_skill().ok_or(format_err!("var {:?} has no associated skill", var))?;
             let cryp = player.cryp_get(params.cryp_id)?;
             // done here because i teach them a tonne of skills for tests
-            let max_skills = 4;
+            let max_skills = 3;
             if cryp.skills.len() >= max_skills {
                 return Err(format_err!("cryp at max skills ({:?})", max_skills));
             }