IntegerArray now supports the find operation for extracting indices along a dimension. API method names have been updated to avoid shadowing. Numerous dimensionwise and elementwise operations have been added for IntegerArrays and RealArrays. The Matrix#diag operation has been added, and returns diagonals as column vectors. There are more variants of the Control#transfer convenience method. Multidimensional array I/O has been abstracted as a service.
