1# CHANGELOG
 2
 3## Pending
 4
 5### Breaking changes
 6
 7### Features
 8
 9- [\#76](https://github.com/arkworks-rs/r1cs-std/pull/76) Implement `ToBytesGadget` for `Vec<UInt8>`.
10
11### Improvements
12
13### Bug Fixes
14
15## v0.3.1
16
17### Features
18
19- [\#71](https://github.com/arkworks-rs/r1cs-std/pull/71) Implement the `Sum` trait for `FpVar`.
20- [\#75](https://github.com/arkworks-rs/r1cs-std/pull/71) Introduce `mul_by_inverse_unchecked` for `FieldVar`. This accompanies the bug fix in [\#70](https://github.com/arkworks-rs/r1cs-std/pull/70).
21
22### Bug Fixes
23
24- [\#70](https://github.com/arkworks-rs/r1cs-std/pull/70) Fix soundness issues of `mul_by_inverse` for field gadgets.
25
26## v0.3.0
27
28### Breaking changes
29
30- [\#60](https://github.com/arkworks-rs/r1cs-std/pull/60) Rename `AllocatedBit` to `AllocatedBool` for consistency with the `Boolean` variable.
31  You can update downstream usage with `grep -rl 'AllocatedBit' . | xargs env LANG=C env LC_CTYPE=C sed -i '' 's/AllocatedBit/AllocatedBool/g'`.
32- [\#65](https://github.com/arkworks-rs/r1cs-std/pull/65) Rename `Radix2Domain` in `r1cs-std` to `Radix2DomainVar`.
33
34### Features
35
36- [\#53](https://github.com/arkworks-rs/r1cs-std/pull/53) Add univariate evaluation domain and Lagrange interpolation. 
37
38### Improvements
39
40- [\#65](https://github.com/arkworks-rs/r1cs-std/pull/65) Add support for non-constant coset offset in `Radix2DomainVar`.
41
42### Bug Fixes
43
44## v0.2.0
45
46### Breaking changes
47
48- [\#12](https://github.com/arkworks-rs/r1cs-std/pull/12) Make the output of the `ToBitsGadget` impl for `FpVar` fixed-size
49- [\#48](https://github.com/arkworks-rs/r1cs-std/pull/48) Add `Clone` trait bound to `CondSelectGadget`.
50
51### Features
52
53- [\#21](https://github.com/arkworks-rs/r1cs-std/pull/21) Add `UInt128`
54- [\#50](https://github.com/arkworks-rs/r1cs-std/pull/50) Add `DensePolynomialVar`
55
56### Improvements
57
58- [\#5](https://github.com/arkworks-rs/r1cs-std/pull/5) Speedup BLS-12 pairing
59- [\#13](https://github.com/arkworks-rs/r1cs-std/pull/13) Add `ToConstraintFieldGadget` to `ProjectiveVar`
60- [\#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
61- [\#20](https://github.com/arkworks-rs/r1cs-std/pull/20) Add `CondSelectGadget` impl for `UInt`s
62- [\#22](https://github.com/arkworks-rs/r1cs-std/pull/22) Reduce density of `three_bit_cond_neg_lookup`
63- [\#23](https://github.com/arkworks-rs/r1cs-std/pull/23) Reduce allocations in `UInt`s
64- [\#33](https://github.com/arkworks-rs/r1cs-std/pull/33) Speedup scalar multiplication by a constant
65- [\#35](https://github.com/arkworks-rs/r1cs-std/pull/35) Construct a `FpVar` from bits
66- [\#36](https://github.com/arkworks-rs/r1cs-std/pull/36) Implement `ToConstraintFieldGadget` for `Vec<Uint8>`
67- [\#40](https://github.com/arkworks-rs/r1cs-std/pull/40), #43 Faster scalar multiplication for Short Weierstrass curves by relying on affine formulae
68- [\#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
69
70### Bug fixes
71
72- [\#8](https://github.com/arkworks-rs/r1cs-std/pull/8) Fix bug in `three_bit_cond_neg_lookup` when using a constant lookup bit
73- [\#9](https://github.com/arkworks-rs/r1cs-std/pull/9) Fix bug in `short_weierstrass::ProjectiveVar::to_affine`
74- [\#29](https://github.com/arkworks-rs/r1cs-std/pull/29) Fix `to_non_unique_bytes` for `BLS12::G1Prepared`
75- [\#34](https://github.com/arkworks-rs/r1cs-std/pull/34) Fix `mul_by_inverse` for constants
76- [\#42](https://github.com/arkworks-rs/r1cs-std/pull/42) Fix regression in `mul_by_inverse` constraint count
77- [\#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
78- [\#57](https://github.com/arkworks-rs/r1cs-std/pull/57) Clean up `UInt` docs
79
80## v0.1.0
81
82Initial release