0.26.6

Bugfixes:

• AffineTransform 2D and 3D inconsistently inverted transformation matrices depending on interpolation on/off
• AverageDistanceOfNClosestNeighbors resulted in wrong results: the distance to neighbors 2, 3, ..., n were averaged and not 1,2,3,...n
• MaximumZProjectionBounded didn't work because of a typo in OpenCL