Merge pull request #383 from Anaphory/fix-sources-and-comments

Fix sources and comments

Merge pull request #376 from Anaphory/fix-phylo

Fix error in phylogenetics exporter

Merge pull request #372 from Anaphory/bantu-improvement

Bantu improvement

Merge pull request #365 from Anaphory/multi-cognate-sets

Multi cognate sets

Merge pull request #358 from Anaphory/bump-version-number

Bump version number

Merge pull request #354 from Anaphory/fix-346

Update metadata, for release

Merge pull request #347 from Anaphory/set-version

Set – and test – package version in __init__.__version__

Merge pull request #291 from Anaphory/fix-zenodo

Update .zenodo.json

Merge pull request #203 from Anaphory/singletons

Singletons

Merge pull request #197 from Anaphory/nan-forms

Deal with NAN forms