Prepare 1.10.0 release
Fix translation
Update german.json

Fix some translations, especially:

- use `ß` character where needed
- translate "Package" to "Paket"
Merge pull request #17 from Bengt/patch-1

Update German translation
Merge pull request #15 from mirorauhala/master

Fix Finnish translation of "open"
Update README.md
Prepare 1.11.0 release