refactor: bump MSRV to 1.60.0 to unify features

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
       - uses: actions/checkout@v1
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: 1.56.0
+          toolchain: 1.60.0
           override: true
 
       # Ensure all code has been formatted with rustfmt
@@ -33,7 +33,7 @@ jobs:
       - uses: actions/checkout@v1
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: 1.56.0
+          toolchain: 1.60.0
           override: true
       - name: cargo fetch
         uses: actions-rs/cargo@v1
@@ -58,7 +58,7 @@ jobs:
       - uses: actions/checkout@v1
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: 1.56.0
+          toolchain: 1.60.0
           override: true
       - run: rustup target add thumbv6m-none-eabi
       - name: cargo fetch
@@ -84,7 +84,7 @@ jobs:
       - uses: actions/checkout@v1
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: 1.56.0
+          toolchain: 1.60.0
           override: true
       - name: cargo fetch
         uses: actions-rs/cargo@v1

CHANGELOG.md

@@ -6,6 +6,8 @@ and this library adheres to Rust's notion of
 [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+- MSRV is now 1.60.0.
+- Removed `derive_bits` feature. Users should enable `derive` and `bits` instead.
 
 ## [0.13.0] - 2022-12-06
 ### Added

Cargo.toml

@@ -27,12 +27,9 @@ rand = "0.8"
 [features]
 default = ["bits", "std"]
 alloc = []
-bits = ["bitvec"]
+bits = ["bitvec", "ff_derive?/bits"]
 derive = ["byteorder", "ff_derive"]
 std = ["alloc"]
-# with MSRV 1.60 this could be merged into bits with ff_derive?/bits
-# see PR#72 for more information.
-derive_bits = ["bits", "ff_derive/bits"]
 
 [[test]]
 name = "derive"

README.md

@@ -52,7 +52,7 @@ And that's it! `Fp` now implements `Field` and `PrimeField`.
 
 ## Minimum Supported Rust Version
 
-Requires Rust **1.56** or higher.
+Requires Rust **1.60** or higher.
 
 Minimum supported Rust version can be changed in the future, but it will be done with a
 minor version bump.

rust-toolchain

@@ -1 +1 @@
-1.56.0
+1.60.0