Refactor affiliation and add grant details in .zenodo.json

- Updated affiliation format for Churavy (as only a single affiliation is allowed in .zenodo.json files...)
- Added grant information.

Author: boriskaus

.zenodo.json

@@ -19,10 +19,7 @@
     },
     {
       "name": "Churavy, Valentin",
-      "affiliation": [
-        "Johannes Gutenberg University Mainz, Germany",
-        "Augsburg University, Germany"
-      ],
+      "affiliation": "Johannes Gutenberg University Mainz, Germany",
       "orcid": "https://orcid.org/0000-0002-9033-165X"
     },
     {
@@ -45,6 +42,27 @@
     "optimization",
     "MPI",
     "parallel computing"
+  ],
+    "grants": [
+    {
+      "title": "GPU4GEO",
+      "funder": {
+        "name": "Platform for Advanced Scientific Computing (PASC)"
+      }
+    },
+    {
+      "title": "∂GPU4GEO",
+      "funder": {
+        "name": "Platform for Advanced Scientific Computing (PASC)"
+      }
+    },
+    {
+      "id": "771143",
+      "title": "MAGMA - Melting And Geodynamic Models of Ascent",
+      "funder": {
+        "name": "European Commission"
+      }
+    }, 
   ],
   "license": {
     "id": "MIT"
@@ -56,4 +74,4 @@
       "identifier": "juliapackage"
     }
   ]
-}
+}