Add github actions

Author: johnlees

.github/workflows/ci.yml

@@ -0,0 +1,23 @@
+name: Cargo Build & Test
+
+on:
+  push:
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build_and_test:
+    name: Rust project - latest
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        toolchain:
+          - stable
+          - beta
+          - nightly
+    steps:
+      - uses: actions/checkout@v3
+      - run: rustup update ${{ matrix.toolchain }} && rustup default ${{ matrix.toolchain }}
+      - run: cargo build --verbose
+      - run: cargo test --verbose

.github/workflows/clippy.yml

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+on: push
+name: Clippy check
+jobs:
+  clippy_check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions-rs/toolchain@v1
+        with:
+            toolchain: nightly
+            components: clippy
+            override: true
+      - uses: actions-rs/clippy-check@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          args: --all-features

.github/workflows/version.yml

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+on:
+  pull_request:
+    branches:
+      - master
+
+# This runs on PRs so error can be seen before merging
+name: Version check
+
+jobs:
+  all:
+    runs-on: ubuntu-latest
+
+    name: Version check
+
+    env:
+      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Check version format and availability
+        run: ./scripts/version_check.sh

scripts/version_check.sh

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+#!/usr/bin/env bash
+set -e
+# Usage:
+#   check_version.sh
+#
+# Reads version from Cargo.toml and checks it against tags
+#
+# Credit to @richfitz for this from the dust package:
+# https://github.com/mrc-ide/dust/blob/master/scripts/version_check
+VERSION=${1:-$(grep '^version' Cargo.toml  | sed 's/.*= *//' | sed 's/"//g')}
+TAG="v${VERSION}"
+
+echo "Proposed version number '$VERSION'"
+
+if echo "$VERSION" | grep -Eq "[0-9]+[.][0-9]+[.][0-9]+"; then
+    echo "[OK] Version number in correct format"
+else
+    echo "[ERROR] Invalid format version number '$VERSION' must be in format 'x.y.z'"
+    exit 1
+fi
+
+EXIT_CODE=0
+
+echo "Updating remote git data"
+git fetch --quiet
+
+BRANCH_DEFAULT=$(git remote show origin | awk '/HEAD branch/ {print $NF}')
+LAST_TAG=$(git describe --tags --abbrev=0 "origin/${BRANCH_DEFAULT}")
+
+echo "Last tag was $LAST_TAG"
+
+if git rev-parse "$TAG" >/dev/null 2>&1; then
+    echo "[ERROR] Tag $TAG already exists - update version number in Cargo.toml"
+    exit 1
+else
+    echo "[OK] Version number not yet present as git tag"
+fi
+
+MAJOR=$(echo $VERSION | cut -d. -f1)
+MINOR=$(echo $VERSION | cut -d. -f2)
+PATCH=$(echo $VERSION | cut -d. -f3)
+
+LAST_VERSION=$(echo "$LAST_TAG" | sed 's/^v//')
+LAST_MAJOR=$(echo $LAST_VERSION | cut -d. -f1)
+LAST_MINOR=$(echo $LAST_VERSION | cut -d. -f2)
+LAST_PATCH=$(echo $LAST_VERSION | cut -d. -f3)
+
+if (( $MAJOR > $LAST_MAJOR )); then
+    echo "[OK] Increasing MAJOR version"
+    exit $EXIT_CODE
+elif (( $MINOR > $LAST_MINOR )); then
+    echo "[OK] Increasing MINOR version"
+    exit $EXIT_CODE
+elif (( $PATCH > $LAST_PATCH )); then
+    echo "[OK] Increasing PATCH version"
+    exit $EXIT_CODE
+else
+    echo "[ERROR] Version number has not increased relative to $LAST_VERSION"
+    exit 1
+fi