v0.8.1

• upgrade to flutter 3.32 and upgrade dependencies

0.8.0

New features:

• Download PDF files as well and provide them offline
• Added sharing button and menu:
  • Open PDF: Open the PDF on the device with the default app for PDFs
  • Share PDF: Via the platform's share dialog
  • Open in browser: Open the current worksheet on https://www.4training.net in the browser
  • Share link: Share the link to the current worksheet on https://www.4training.net via the platform's share dialog