Update

spec/22/events.yaml

@@ -198,6 +198,8 @@
   track: defi
   speakers: [ jiri-cepelka ]
   duration: 50
+  after: 
+    - defi-pro-zacatecniky
 
 - id: krypto-z-pohledu-rodicu
   type: workshop

utils/schema/1/events.yaml

@@ -33,6 +33,11 @@ items:
       type: number
     description:
       type: string
+    after:
+      type: array
+      items:
+        type: string
+        pattern: "^[a-z0-9-]+$"
     rightAfter:
       type: string
       pattern: "^[a-z0-9-]+$"