- bump ecosystem versions

- fix a null ref when accessing lineno
- fix an exception name
- bump version to 2.2.2

fix broken link

enable asciidoctor-mathematical for pdf:s by default

update version

remove vscode settings file

Merge pull request #21 from rillbert/personal/rillbert/bump_to_2_0

bump version nr to 2.0.0

Merge pull request #18 from rillbert/personal/rillbert/test_2_0

Update to latest asciidoctor versions

run standard

remove api disclaimer

bump version to sync gem with github