add identifiers to zenodo metadata

Author: sappelhoff

.zenodo.json

@@ -55,5 +55,29 @@
       "eeg"
     ],
     "license": "MIT",
-    "upload_type": "software"
-  }
+    "upload_type": "software",
+    "access_right": "open",
+    "language": "eng",
+    "related_identifies": [
+        {
+            "relation": "isSupplementedBy",
+            "identifier": "https://github.com/sappelhoff/pyprep/",
+            "resource_type": "software"
+        },
+        {
+            "relation": "isSupplementedBy",
+            "identifier": "10.3389/fninf.2015.00016",
+            "resource_type": "article"
+        },
+        {
+            "relation": "isDerivedFrom",
+            "identifier": "https://github.com/VisLab/EEG-Clean-Tools",
+            "resource_type": "software"
+        },
+        {
+            "relation": "isSupplementedBy",
+            "identifier": "https://github.com/a-hurst/matprep_artifacts",
+            "resource_type": "software"
+        }
+    ]
+  }