Version 0.4.0

⚠️ BREAKING CHANGES! ⚠️
Previously backed up pins can not be imported.
Please create new backup files.

🆕 Additions:

• image export functionality (e430282)
• backup integrity check for password validation (4c8fa8e)

🛠️ Enhancements:

• improve backup dialog behaviour (f1cb2e3, f0755d3)
• switch to more useful backup versioning (3512284)
• show pin hash in viewer (cb39b57)
• allow throwing caught error for reporting (58c50a9)