Add GitHub workflow for Clippy (#173)

* Add GitHub workflow for Clippy

Closes #158

* Fix errors found by clippy::needless-borrow

https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow

* Fix errors found by clippy::collapsible-else-if

https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_else_if

* Fix error found by clippy::single-match

https://rust-lang.github.io/rust-clippy/master/index.html#single_match

1 files changed, 27 insertions, 0 deletions

diff --git a/.github/workflows/clippy.yml b/.github/workflows/clippy.yml
new file mode 100644
index 0000000..aee7015
--- /dev/null
+++ b/.github/workflows/clippy.yml
@@ -0,0 +1,27 @@
+name: Clippy - Catch common mistakes and improve your Rust code
+
+on:
+  push:
+    branches: [dev, main]
+  pull_request:
+    branches: [dev, main]
+
+jobs:
+  check:
+    name: Clippy - Catch common mistakes and improve your Rust code
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust: [stable]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install minimal ${{ matrix.rust }} rust
+        uses: actions-rs/toolchain@v1
+        with:
+          override: true
+          profile: minimal
+          components: clippy
+          toolchain: ${{ matrix.rust }}
+      - run: cargo -Vv && rustc -Vv
+      - run: cargo clippy -- --deny clippy::all --warn clippy::cargo
+        if: ${{ matrix.rust == 'stable' }}