feat: use yamllint to check YAML files, instead of simply parsing and pretty-printing them · jenstroeger/python-package-template@08bd053

1:91 [new-lines] wrong new line character: expected \n

1:55 [new-lines] wrong new line character: expected \n

1:92 [new-lines] wrong new line character: expected \n

1:57 [new-lines] wrong new line character: expected \n

1:77 [new-lines] wrong new line character: expected \n

1:62 [new-lines] wrong new line character: expected \n

1:77 [new-lines] wrong new line character: expected \n

1:86 [new-lines] wrong new line character: expected \n

1:57 [new-lines] wrong new line character: expected \n

1:54 [new-lines] wrong new line character: expected \n

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