transpose function not checking indices

[bbell]

Expected behaviour:

when using the query option for encode/decode of {"transpose": [x,y]}, x and y are integers meant to describe the dimensions being transposed. In case x and y are not the last dimensions, transpose should throw an exception, e.g. "Transposing an MDA currently only applies the last two dimensions. Verify your dimension choices and try the query again."

Current behaviour:

including {"transpose": [x,y]} transposes the last two dimensions regardless of the input for x and y, so long as they are integers.

[bbell]

fixed!