Gratopy 0.1 release candidate 1

This is the first pre-release of the Graz accelerated tomographic projections for Python.

Highlights

• Easy-to-use tomographic projection toolbox.
• High-quality 2D projection operators.
• Fast projection due to custom OpenCL/GPU implementation.
• Seamless integration into PyOpenCL.
• Basic iterative reconstruction schemes included (Landweber, CG, total variation).
• Comprehensive documentation, tests and example code.