Update MSRV in CI and Readme from 1.29 to 1.41

Author: elichai

.github/workflows/rust.yml

@@ -36,7 +36,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        rust: [stable, beta, nightly, 1.29.0]
+        rust: [stable, beta, nightly, 1.41.1]
     steps:
       - name: Checkout Crate
         uses: actions/checkout@v2
@@ -46,9 +46,6 @@ jobs:
           profile: minimal
           toolchain: ${{ matrix.rust }}
           override: true
-      - name: Pin cc if rust 1.29
-        if: matrix.rust == '1.29.0'
-        run: cargo generate-lockfile --verbose && cargo update -p cc --precise "1.0.41" --verbose
       - name: Running cargo
         env:
           DO_FEATURE_MATRIX: true
@@ -59,7 +56,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        rust: [stable, beta, nightly] # No 1.29 because WASM requires Rust 1.30
+        rust: [stable, beta, nightly] # wasm-pack doesn't support rust 1.41.1
     steps:
       - name: Checkout Crate
         uses: actions/checkout@v2

README.md

@@ -20,21 +20,7 @@ Contributions to this library are welcome. A few guidelines:
 * Any breaking changes must have an accompanied entry in CHANGELOG.md
 * No new dependencies, please.
 * No crypto should be implemented in Rust, with the possible exception of hash functions. Cryptographic contributions should be directed upstream to libsecp256k1.
-* This library should always compile with any combination of features on **Rust 1.29**.
-
-## A note on Rust 1.29 support
-
-The build dependency `cc` might require a more recent version of the Rust compiler.
-To ensure compilation with Rust 1.29.0, pin its version in your `Cargo.lock`
-with `cargo update -p cc --precise 1.0.41`. If you're using `secp256k1` in a library,
-to make sure it compiles in CI, you'll need to generate a lockfile first.
-Example for Travis CI:
-```yml
-before_script:
-  - if [ "$TRAVIS_RUST_VERSION" == "1.29.0" ]; then
-    cargo generate-lockfile --verbose && cargo update -p cc --precise "1.0.41" --verbose;
-    fi
-```
+* This library should always compile with any combination of features on **Rust 1.41.1**.
 
 ## Fuzzing