Bug Fixes
- Add Synthetix coin ([72](https://github.com/crypkit/blockapi/pull/72),
[`fd75722`](https://github.com/crypkit/blockapi/commit/fd757225b6af0baf22ebd1fca309cc7887783d3c))
- Cleanup Coin definitions ([67](https://github.com/crypkit/blockapi/pull/67),
[`280b83b`](https://github.com/crypkit/blockapi/commit/280b83bb1b537b3064687ceda79bae99700d0adf))
Features
- Customize API base URL ([73](https://github.com/crypkit/blockapi/pull/73),
[`5db6ba5`](https://github.com/crypkit/blockapi/commit/5db6ba5d57c09af982f0af47211a2d88476c1759))
Co-authored-by: galvanizze <marek.galvanekgmail.com>