Releasing concepticon-data

We try to follow a semantic versioning scheme for releases of concepticon-data.

Creating a release comprises the following tasks:

Check the list of not linked concepts - with new concept sets some of these could be ticked off!
```
concepticon notlinked
```

Run bibtool on the references to normalize them for import:

bibtool -r concepticondata/references/bibtool.rsc -o concepticondata/references/references.bib concepticondata/references/references.bib

Recreate network data in concept lists (optionally also download raw data again):
```
concepticon recreate_networks
```
Recreate the statistics pages:
```
concepticon stats
```
Recreate and push the linking data:
```
concepticon make_linkdata
```
Check and/or update metadata.json (which is read via clldutils.apilib.API.dataset_metadata)
Afterwards, recreate .zenodo.json:
```
concepticon citation --version vX.Y.Z
```
Verify that .zenodo.json contains the (potentially) updated information from metadata.json
Make sure all changes are pushed and merged into the master branch.
Make sure all tests pass, and also address warnings about missing PDFs (see handling source PDFs)
```
concepticon test
```

Make sure CLDF-creation works:

cldfbench makecldf cldfbench_concepticon.py --glottolog-version v5.1

Commit the updates for this version and push updated data:

git commit -a -m"<version> release"
git tag -a v<version> -m"release <version>"
git push origin
git push origin --tags

Draft a release via GitHub UI
- picking the correct tag, e.g. v1.1.0
- using CLLD Concepticon <version> as the title
- and giving the citation obtained running concepticon citation as release description.
After a while, check on https://zenodo.org for the DOI assigned to the release
- complete the metadata for the release on ZENODO and
- add the DOI badge to the release description on GitHub.
Create a new milestone to link to issues for the next version.
Create the corresponding CLDF dataset release following the instructions at https://github.com/concepticon/concepticon-cldf/blob/master/RELEASING.md
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Handling source PDFs

Source PDFs for concept lists - like all binary or media content of CLLD databases - are uploaded to CDSTAR. This is done by