Support for bivariate convolution & normalization with offset (#126)

* Add bivariate-convolution
* Add pair-wise convolution + tests + benches
* Add take_cnv_pvec_[left/right] to Scratch & updated CHANGELOG.md
* cross-base2k normalization with positive offset
* clippy & fix CI doctest avx compile error
* more streamlined bounds derivation for normalization
* Working cross-base2k normalization with pos/neg offset
* Update normalization API & tests
* Add glwe tensoring test
* Add relinearization + preliminary test
* Fix GGLWEToGGSW key infos
* Add (X,Y) convolution by const (1, Y) poly
* Faster normalization test + add bench for cnv_by_const
* Update changelog

poulpy-core/src/dist.rs

@@ -63,10 +63,7 @@ impl Distribution {
             TAG_ZERO => Distribution::ZERO,
             TAG_NONE => Distribution::NONE,
             _ => {
-                return Err(std::io::Error::new(
-                    std::io::ErrorKind::InvalidData,
-                    "Invalid tag",
-                ));
+                return Err(std::io::Error::new(std::io::ErrorKind::InvalidData, "Invalid tag"));
             }
         };
         Ok(dist)