More fixes

src/pairs/analysis/blocks.py

src/pairs/code_gen/cgen.py

src/pairs/ir/arrays.py

src/pairs/ir/bin_op.py

src/pairs/ir/const_vector.py

src/pairs/ir/dump.py

src/pairs/ir/features.py

src/pairs/ir/module.py

src/pairs/ir/mutator.py

src/pairs/ir/properties.py

src/pairs/ir/select.py

src/pairs/ir/symbols.py

src/pairs/mapping/funcs.py

src/pairs/mapping/keywords.py

src/pairs/sim/simulation.py

src/pairs/transformations/expressions.py