Fix/refactors (#104)

* Rename UVPolynomial to DenseUVPolynomial

needed due to https://github.com/arkworks-rs/algebra/pull/412



* Fix formatting

* Fix `msm` usage after `ark-ec` breaking change

Use `<E::G{1,2}Projective as VariableBaseMSM>::msm_bigint` instead of `VariableBase::msm`

* Removed ToBytes implementations and replaced uses of the tobytes! macro.

* Update Cargo.toml

* Update src/ipa_pc/mod.rs

* Apply suggestions from code review

* apply fmt

* small change to ipa_pc open

Co-authored-by: Marcin Górny <marcin.gorny.94@protonmail.com>
Co-authored-by: Weikeng Chen <w.k@berkeley.edu>