Packings in declarations no longer support tuples, since declarations should not contain unsolved fields. Tuples are now #solve expressions, and concatenations are #concat expressions.
Separating scalars is done with #packing (x, y) which is not represented as a tuple expression, but a list in the packing repHint.
Makes the following changes to packing parsing:
#solveexpressions, and concatenations are#concatexpressions.#packing (x, y)which is not represented as a tuple expression, but a list in the packingrepHint.