Refactor Matrix vectors and Logical operation (#28)

* Refactor Matrix vectors operation

* Refacotr NIFS logical operation

src/ccs/mod.rs

@@ -91,6 +91,7 @@ impl<C: CurveGroup> CCS<C> {
             M: vec![r1cs.A, r1cs.B, r1cs.C],
         }
     }
+
     pub fn to_r1cs(self) -> R1CS<C::ScalarField> {
         R1CS::<C::ScalarField> {
             l: self.l,

src/ccs/r1cs.rs

@@ -53,6 +53,7 @@ pub struct RelaxedR1CS<F: PrimeField> {
     pub u: F,
     pub E: Vec<F>,
 }
+
 impl<F: PrimeField> RelaxedR1CS<F> {
     /// check that a RelaxedR1CS structure is satisfied by a z vector. Only for testing.
     pub fn check_relation(&self, z: &[F]) -> Result<(), Error> {