v1.0.0

• Update to support Calamari 1.0
• Major number increase due to needed model update
• New GT4HistOCR model required
  • https://qurator-data.de/calamari-models/GT4HistOCR/2019-12-11T11_10+0100/
  • This model gives as good results as before (https://gist.github.com/mikegerber/7e16e814bf723f04c47c5a6e2a6ac1d1)
• Calamari 1.0 requires TF 2!