## nginx/ngx-rust — v0.4.0-beta…v0.4.1

_17 commits._

### Features
- **feat: (2 of 2) Upstream module example (#37)** (840d789)
- **feat: (1 of 2) Supporting changes for upstream example module. (#36)** (8b3a119)

### Fixes
- **fix(#50): user_agent method returns 'Option<&NgxStr>' and not '&NgxStr'** (8706830)
- **fix(#41): zlib version update** (89e0fcc)
- **fix: check user_agent for null** (0ca0bc9)

### Backend
- **release: ngx 0.4.1** (9d2ce0d)
- **release: nginx-sys 0.2.1** (89eb277)
- **Revert "ci: use GH cache for .cache folder on MAC OS"** (7972ae7)

### Docs
- **docs: updated changelog** (74604e2)

### Chore
- **chore: fix fmt curl example** (1e7b0a6)
- **chore: readme for build examples package** (9ce7895)
- **chore: fix clippy warnings** (2072f8a)
- **ci: run clippy in GitHub Actions** (0870373)
- **ci: ensure FOSSA scan runs only on the upstream** (3d952df)
- **ci: use ZLIB_VERSION 1.3 for MAC OS tests** (e629f97)
- **ci: use GH cache for .cache folder on MAC OS** (5f721a9)
- **chore: fixed typo in changelog.sh** (d352a40)

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