Fix
* Raise ImportError when iio-ffmpeg is missing ([880](https://github.com/imageio/imageio/issues/880)) ([`e6e7ff4`](https://github.com/imageio/imageio/commit/e6e7ff4383da40c46000c6e8f227aa05983e2d15))
Other
* EXR spec ([885](https://github.com/imageio/imageio/issues/885)) ([`1b6159b`](https://github.com/imageio/imageio/commit/1b6159b063b3b86cbb1322162f97e42127bcb7b2))
* Remove stale funding platform ([`f428953`](https://github.com/imageio/imageio/commit/f42895310c85f584ed5278f0f36b63c786878d56))