v0.81b

all importers except for the .obj-importer are currently disabled.
When importing objects that use materials you should add the used textures into the '_import_'-folder
of the texture-archive.

Object-mode now supports experimental multi-selection.
The third button in object-mode allows to crop the selected objects together into one single object.
To create cgs-files enter 'export [filename]' (without trailing extension) into the console.

There are certain known issues regarding runtime-stability and correctness. I haven't had the time
to look into all of them just yet. You can avoid problems by saving often and restarting Iris (and reloading)
before exporting objects.