Feature
* **sierra:** Add fetcher module for Sierra Club website ([`3ca662c`](https://github.com/entelecheia/sierraclub/commit/3ca662ce2ea94c3c8753963302a66e1fc8ab287c))
* **tests:** Test file for SierraClubFetcher ([`1f29df4`](https://github.com/entelecheia/sierraclub/commit/1f29df421e21c62864cd191517f8efb124338feb))
* **sierra:** Add sierraclub.yaml configuration file ([`856117a`](https://github.com/entelecheia/sierraclub/commit/856117aac7e1b80deaac0f8539263660ac623dcc))
* **sierra:** Add Sierra Club fetcher module with methods for fetching press releases ([`0199302`](https://github.com/entelecheia/sierraclub/commit/0199302b053fa64cc3078c15af9073a8a1c17ce3))
* **dependencies:** Add hyfi-fetcher to dev dependencies ([`3d567fa`](https://github.com/entelecheia/sierraclub/commit/3d567fafc36b58ee866a0c202f5949e51df2bc38))
Fix
* **dependencies:** Update hyfi-fetcher to version 0.2.2 ([`3e5cb6f`](https://github.com/entelecheia/sierraclub/commit/3e5cb6f996a07a4aa2684f4b30956c7b3d5f3b07))
* **dependencies:** Update hyfi-fetcher version ([`7b833bc`](https://github.com/entelecheia/sierraclub/commit/7b833bc0124277ee154ea2ee735914710d2a40f1))