Artscript v2.1-pre

With over a 100 commits since last version there has been a lot of improvements

1. All functions from original v1 script are now ported
2. All Image size metadata is obtained quickly, no more waiting for XCF or PSD to be processed
3. Collage tab with 4 modes. Zero geometry, Concatenate, Wrap, Crop
4. New resize GUI to manage large multiresize operations
5. Save state: Artscript remembers the settings as they were last time it was launch
6. Presets defined in presets.config can now be loaded on demand using the GUI
7. Drag and Drop files to window to load images
8. Dropped dependency on md5 binary
9. Watermarks can be rotated and placed anywhere.

Amongst many other new features they were also a lot of bug fixes.

This pre-release is mainly for last minute bug hunting. while I documentation is prepared.