Revise the version number of Bandersnatch (#80)

ed_on_bls12_381_bandersnatch/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ark-ed-on-bls12-381-bandersnatch"
-version = "0.1.0"
+version = "0.3.0"
 authors = [ "zhenfei zhang", "arkworks contributors" ]
 description = "Bandersnatch: a curve defined over the scalar field of the BLS12-381 curve"
 repository = "https://github.com/zhenfeizhang/bandersnatch-rust"
@@ -31,4 +31,4 @@ std = [
     "ark-ec/std", 
     "ark-bls12-381/std" 
 ]
-r1cs = ["ark-r1cs-std"]
+r1cs = ["ark-r1cs-std"]