v0.9.5

• Option to highlight the path the students took through the map
• Using filters for the map is now supported (be careful: many filters will destroy the svg!)
• Title of places is now updated in editor (visible when hovering)
• Moved set_module_viewed() to webservice
• Environment check for FreeType support
• Maturity level is now "stable"
• Improved unit tests
• Mapworker was refactored
• Editor has now ids (for changing the form by the theme or sth else)

Thanks a lot to @tholudwig for doing the review, especially for his remarks on the highlight feature!