Neat tartan app

[CMcG]

I've been playing around with this app, and it's a lot of fun! Thus far, however, I'd consider it more of a toy than a tool... maybe that was the intention, but I'd love to see updates that would make it a legit tartan design app. For now, this is useful for sketching an idea, but I would go elsewhere for anything more than that.

Here's my wishlist:
- Allow more different thread counts. The minimum increment should be two, not four.
- Fix a bug that sometimes makes lines of the same thread count look like they are different sizes.
- Allow swapping colours in edit mode. Currently the app only allows one to change the size of a line. Alternatively (or in conjunction) make it possible to drag colours to rearrange them.
- Offer text export of sett code (i.e., colours and thread counts) so that one could have it woven. Right now it just exports an image.
- Create an iPad native version. The present iPhone version runs on my iPad, but not in full screen resolution.