Update for 1.9

This release fixes some compatibility problems with 1.9 (namely, pack using wrong "version" number).

There may be some other issues, in particular with the custom sound wizard. I haven't tried that.

Please report any issues in the bug-tracker!

Changelog:

• Fixed broken export with MC 1.9
• Added Fancy Tree groups for Loot Tables
• Automatic name filling in "New Project" dialog
• Added "Open in file manager" button to context menu.

To use the Open in file manager feature, you have to select a single asset file, and it has to be in your project. (Use Copy to project).