Smash out monero-bulletproofs

Removes usage of dalek-ff-group/multiexp for curve25519-dalek.

Makes compiling in the generators an optional feature.

Adds a structured batch verifier which should be notably more performant.

Documentation and clean up still necessary.

coins/monero/src/ringct/mod.rs

@@ -18,7 +18,7 @@ pub use monero_clsag as clsag;
 /// BorromeanRange struct, along with verifying functionality.
 pub mod borromean;
 /// Bulletproofs(+) structs, along with proving and verifying functionality.
-pub mod bulletproofs;
+pub use monero_bulletproofs as bulletproofs;
 
 use crate::{
   Protocol,