Fix j-reduction for torque

examples/dem.py

src/pairs/ir/apply.py

src/pairs/ir/arrays.py

src/pairs/ir/features.py

src/pairs/ir/lit.py

src/pairs/ir/matrices.py

src/pairs/ir/mutator.py

src/pairs/ir/properties.py

src/pairs/ir/quaternions.py

src/pairs/ir/scalars.py

src/pairs/ir/variables.py

src/pairs/ir/vectors.py

src/pairs/mapping/funcs.py

src/pairs/mapping/keywords.py

src/pairs/transformations/devices.py