Version 1.0 is out

This version does not include many changes. But as version 0.6 is out for a while now, and I have not yet received any bug reports, I thought to switch to 1.0.

The changes done are small changes to increase the usability, e.g. navigation in the tag list is improved (right click does no longer select a tag), and the file list will only be shown after clicking the "Show" button to avoid unwanted of waiting.