v1.0.2 - Fix/change: Half a pixel offset for reported center_of_rotation

Center of rotation reported assuming the origin at the center of top left pixel, appropriate for scipy.ndimage.map_coordinates (used by globalign.warp_image_rigid).
Prior versions reported Center of rotation assuming the origin at top left of top left pixel (convention of torchvision.transforms.functional.rotate).

This fix resolves Issue #1

Full Changelog: v1.0.1...v1.0.2