Replace block module with helper functions

.github/workflows/test.yml

@@ -1,4 +1,4 @@
-name: Main tests
+name: Tests
 
 on:
   push:
@@ -44,7 +44,7 @@ jobs:
         with:
           toolchain: nightly
       - name: rand_core
-        run: cargo doc --all-features --no-deps
+        run: cargo doc --no-deps
 
   test:
     runs-on: ${{ matrix.os }}
@@ -92,12 +92,9 @@ jobs:
       - run: ${{ matrix.deps }}
       - name: Maybe minimal versions
         if: ${{ matrix.variant == 'minimal_versions' }}
-        run: |
-          cargo generate-lockfile -Z minimal-versions
+        run: cargo generate-lockfile -Z minimal-versions
       - name: Test rand_core
-        run: |
-          cargo test --target ${{ matrix.target }} --no-default-features
-          cargo test --target ${{ matrix.target }} --features serde
+        run: cargo test --target ${{ matrix.target }}
 
   test-cross:
     runs-on: ${{ matrix.os }}
@@ -124,9 +121,7 @@ jobs:
       - name: Install cross
         run: cargo install cross || true
       - name: Test
-        run: |
-          # all stable features:
-          cross test --no-fail-fast --target ${{ matrix.target }}
+        run: cross test --no-fail-fast --target ${{ matrix.target }}
 
   test-miri:
     runs-on: ubuntu-latest
@@ -138,10 +133,7 @@ jobs:
           rustup override set nightly
           cargo miri setup
       - name: Test rand
-        run: |
-          cargo miri test
-          cargo miri test --features=serde
-          cargo miri test --no-default-features
+        run: cargo miri test
 
   test-no-std:
     runs-on: ubuntu-latest
@@ -152,7 +144,7 @@ jobs:
         with:
             target: thumbv6m-none-eabi
       - name: Build top-level only
-        run: cargo build --target=thumbv6m-none-eabi --no-default-features
+        run: cargo build --target=thumbv6m-none-eabi
 
   test-ios:
     runs-on: macos-latest

Cargo.toml

@@ -15,18 +15,3 @@ categories = ["algorithms", "no-std"]
 edition = "2024"
 rust-version = "1.85"
 exclude = ["/.github"]
-
-[package.metadata.docs.rs]
-# To build locally:
-# RUSTDOCFLAGS="--cfg docsrs" cargo +nightly doc --all-features --no-deps --open
-all-features = true
-rustdoc-args = ["--generate-link-to-definition"]
-
-[package.metadata.playground]
-all-features = true
-
-[features]
-serde = ["dep:serde"] # enables serde for BlockRng wrapper
-
-[dependencies]
-serde = { version = "1.0.103", features = ["derive"], optional = true }