Log Message:
klavaro: update to 3.13.

Version 3.12

- Turkish translation added.
- Indonesian support added.
- Linking with external GtkDatabox3 lib, version >= 1.0.0.
- Removed internal copy of old Gtkdatabox.

Version 3.10
- Tibetan support added.
- Missing Windows package for this, sorry.

Version 3.06
- New Windows packages from now on.

Version 3.05
- Instructions for using Shift.
- Explain custom basic lessons.
- Allow individual deletion of progress charts.

Version 3.04
- Bug fixes.

Version 3.03
- New language: Serbian!

Version 3.02
- New languages: Catalan and Croatian!

Version 3.01
- New languages: Slovenian and Punjabi!

Version 3.00

- Moved to GTK+3!
- Configurable goals and levels.
- New language added: Finnish, partially.