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, 18 insertions, 12 deletions

diff --git a/python/tests/files/datacite/datacite_result_19.json b/python/tests/files/datacite/datacite_result_19.json
index 85bada92..8b91efe5 100644
--- a/python/tests/files/datacite/datacite_result_19.json
+++ b/python/tests/files/datacite/datacite_result_19.json
@@ -1,15 +1,21 @@
 {
-    "extra": {"datacite": {}, "month": 8},
-    "title": "Eastern questionnaire, answer sheet for Interviewee 55236, page 092",
-    "release_type": "article",
-    "release_stage": "published",
-    "release_date": "2017-08-24",
-    "release_year": 2017,
-    "ext_ids": {
-        "doi": "10.7916/d86x0cg1"
+  "extra": {
+    "datacite": {
+      "metadataVersion": 3,
+      "schemaVersion": "http://datacite.org/schema/kernel-3"
     },
-    "publisher": "Columbia University",
-    "contribs": [],
-    "refs": [],
-    "abstracts": []
+    "month": 8
+  },
+  "title": "Eastern questionnaire, answer sheet for Interviewee 55236, page 092",
+  "release_type": "article",
+  "release_stage": "published",
+  "release_date": "2017-08-24",
+  "release_year": 2017,
+  "ext_ids": {
+    "doi": "10.7916/d86x0cg1"
+  },
+  "publisher": "Columbia University",
+  "contribs": [],
+  "refs": [],
+  "abstracts": []
 }