Fixed an issue in implementation of #641
Fixed issues in implementation of #597
Resolved an issue in "axisshift" with "fft2d"
Added some small fixes detected during tests
Fixed a small glitch in the implementation of ticket #615
Fixed a set of minor issues occured during tests
Implemented ticket #631 "Create moving stats matop functions"
Implemented ticket #647 "Table methods for reading and writing comments"
Deleted obsolete legacy backup branches
Deleted obsolete branch for ticket #615