V0.2.1 (#24)

## What's Changed
* Refactor tests by @Yag000 in
#20
* Improve ci by @Yag000 in #21
* Update cargo by @Yag000 in
#22
* chore: lint the project by @Yag000 in
#23


**Full Changelog**:
v0.2.0...v0.2.1

.github/workflows/rust.yml

@@ -1,5 +1,4 @@
 name: Rust
-
 on:
   push:
     branches: ["master"]
@@ -9,14 +8,50 @@ env:
   CARGO_TERM_COLOR: always
 
 jobs:
-  build:
+  test:
+    name: Test
     runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v3
+
+      - name: Install the Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Rust Cache Action
+        uses: Swatinem/rust-cache@v2
 
+      - name: Run tests
+        run: cargo test
+
+  fmt:
+    name: Rustfmt
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - name: Build
-        run: cargo build --all --verbose --release
-      - name: Run tests
-        run: cargo test --all --verbose --release
-      - name: Lint
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt
+      - name: Enforce formatting
+        run: cargo fmt --check
+
+  lint:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: clippy
+      - name: Linting
         run: ./run_linter.sh
+
+  coverage:
+    name: Code coverage
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@stable
+      - name: Generate code coverage
+        run: cargo install cargo-tarpaulin && cargo tarpaulin --verbose --workspace