* Move code from lima::geometry to lima::proccessing::geom
* Use centrosymmetric transformations with simplified affine matrix
* Rename classes and methods with more explicit nomenclature
* Test with random processing chains:
  reference solution is computed by processing a source image with a ROI
  and detecting the resulting ROI in the final image.
* Switch to Boost.Filesystem since gcc 7.3 does not have support for <filesystem>