Add CI and MSRV

.github/workflows/ci.yml

@@ -0,0 +1,28 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+      - name: Format Check
+        run: |
+          cargo fmt -- --check
+          cargo clippy --all-targets -- -D warnings
+          cargo check --all-features
+      - name: Test
+        run:
+          cargo test
+      - name: MSRV
+        run: |
+          cargo install cargo-msrv@0.19.2
+          cargo msrv verify

Cargo.toml

@@ -9,5 +9,6 @@ repository = "https://github.com/rustaceanrob/hintsfile"
 readme = "README.md"
 keywords = ["bitcoin", "cryptography", "network", "peer-to-peer"]
 categories = ["cryptography::cryptocurrencies"]
+rust-version = "1.80.0"
 
 [dependencies]

README.md

@@ -18,3 +18,7 @@ use hintsfile::Hintsfile;
 // Load a file
 let hints = Hintsfile::from_reader(&mut file)?;
 ```
+
+## MSRV
+
+This crate compiles with a toolchain of **1.80.0** or higher.