1# CHANGELOG
 2
 3## Pending
 4
 5### Breaking changes
 6
 7### Features
 8
 9### Improvements
10
11### Bug Fixes
12
13## v0.3.1
14
15### Features
16
17- [\#71](https://github.com/arkworks-rs/r1cs-std/pull/71) Implement the `Sum` trait for `FpVar`.
18
19### Bug Fixes
20
21- [\#70](https://github.com/arkworks-rs/r1cs-std/pull/70) Fix soundness issues of `mul_by_inverse` for field gadgets.
22
23## v0.3.0
24
25### Breaking changes
26
27- [\#60](https://github.com/arkworks-rs/r1cs-std/pull/60) Rename `AllocatedBit` to `AllocatedBool` for consistency with the `Boolean` variable.
28  You can update downstream usage with `grep -rl 'AllocatedBit' . | xargs env LANG=C env LC_CTYPE=C sed -i '' 's/AllocatedBit/AllocatedBool/g'`.
29- [\#65](https://github.com/arkworks-rs/r1cs-std/pull/65) Rename `Radix2Domain` in `r1cs-std` to `Radix2DomainVar`.
30
31### Features
32
33- [\#53](https://github.com/arkworks-rs/r1cs-std/pull/53) Add univariate evaluation domain and Lagrange interpolation. 
34
35### Improvements
36
37- [\#65](https://github.com/arkworks-rs/r1cs-std/pull/65) Add support for non-constant coset offset in `Radix2DomainVar`.
38
39### Bug Fixes
40
41## v0.2.0
42
43### Breaking changes
44
45- [\#12](https://github.com/arkworks-rs/r1cs-std/pull/12) Make the output of the `ToBitsGadget` impl for `FpVar` fixed-size
46- [\#48](https://github.com/arkworks-rs/r1cs-std/pull/48) Add `Clone` trait bound to `CondSelectGadget`.
47
48### Features
49
50- [\#21](https://github.com/arkworks-rs/r1cs-std/pull/21) Add `UInt128`
51- [\#50](https://github.com/arkworks-rs/r1cs-std/pull/50) Add `DensePolynomialVar`
52
53### Improvements
54
55- [\#5](https://github.com/arkworks-rs/r1cs-std/pull/5) Speedup BLS-12 pairing
56- [\#13](https://github.com/arkworks-rs/r1cs-std/pull/13) Add `ToConstraintFieldGadget` to `ProjectiveVar`
57- [\#15](https://github.com/arkworks-rs/r1cs-std/pull/15), #16 Allow `cs` to be `None` when converting a Montgomery point into a Twisted Edwards point
58- [\#20](https://github.com/arkworks-rs/r1cs-std/pull/20) Add `CondSelectGadget` impl for `UInt`s
59- [\#22](https://github.com/arkworks-rs/r1cs-std/pull/22) Reduce density of `three_bit_cond_neg_lookup`
60- [\#23](https://github.com/arkworks-rs/r1cs-std/pull/23) Reduce allocations in `UInt`s
61- [\#33](https://github.com/arkworks-rs/r1cs-std/pull/33) Speedup scalar multiplication by a constant
62- [\#35](https://github.com/arkworks-rs/r1cs-std/pull/35) Construct a `FpVar` from bits
63- [\#36](https://github.com/arkworks-rs/r1cs-std/pull/36) Implement `ToConstraintFieldGadget` for `Vec<Uint8>`
64- [\#40](https://github.com/arkworks-rs/r1cs-std/pull/40), #43 Faster scalar multiplication for Short Weierstrass curves by relying on affine formulae
65- [\#46](https://github.com/arkworks-rs/r1cs-std/pull/46) Add mux gadget as an auto-impl in `CondSelectGadget` to support random access of an array
66
67### Bug fixes
68
69- [\#8](https://github.com/arkworks-rs/r1cs-std/pull/8) Fix bug in `three_bit_cond_neg_lookup` when using a constant lookup bit
70- [\#9](https://github.com/arkworks-rs/r1cs-std/pull/9) Fix bug in `short_weierstrass::ProjectiveVar::to_affine`
71- [\#29](https://github.com/arkworks-rs/r1cs-std/pull/29) Fix `to_non_unique_bytes` for `BLS12::G1Prepared`
72- [\#34](https://github.com/arkworks-rs/r1cs-std/pull/34) Fix `mul_by_inverse` for constants
73- [\#42](https://github.com/arkworks-rs/r1cs-std/pull/42) Fix regression in `mul_by_inverse` constraint count
74- [\#47](https://github.com/arkworks-rs/r1cs-std/pull/47) Compile with `panic='abort'` in release mode, for safety of the library across FFI boundaries
75- [\#57](https://github.com/arkworks-rs/r1cs-std/pull/57) Clean up `UInt` docs
76
77## v0.1.0
78
79Initial release