datacite: adding datacite-specific extra metadata

* attributes.metadataVersion
* attributes.schemaVersion
* attributes.version (source dependent values, follows suggestions in
https://schema.datacite.org/meta/kernel-4.3/doc/DataCite-MetadataKernel_v4.3.pdf#page=26,
but values vary)

Furthermore:

* attributes.types.resourceTypeGeneral
* attributes.types.resourceType

1 files changed, 16 insertions, 13 deletions

diff --git a/python/tests/files/datacite/datacite_result_21.json b/python/tests/files/datacite/datacite_result_21.json
index 73df8216..1230abfa 100644
--- a/python/tests/files/datacite/datacite_result_21.json
+++ b/python/tests/files/datacite/datacite_result_21.json
@@ -1,15 +1,18 @@
 {
-    "extra": {"datacite": {}, "month": 8},
-    "title": "ABC",
-    "release_type": "article",
-    "release_stage": "published",
-    "release_date": "2017-08-24",
-    "release_year": 2017,
-    "ext_ids": {
-        "doi": "10.7916/d86x0cg1"
-    },
-    "language": "de",
-    "contribs": [],
-    "refs": [],
-    "abstracts": []
+  "extra": {
+    "datacite": {},
+    "month": 8
+  },
+  "title": "ABC",
+  "release_type": "article",
+  "release_stage": "published",
+  "release_date": "2017-08-24",
+  "release_year": 2017,
+  "ext_ids": {
+    "doi": "10.7916/d86x0cg1"
+  },
+  "language": "de",
+  "contribs": [],
+  "refs": [],
+  "abstracts": []
 }