Fix
* Fix bug of 1068 that `getattr` cannot get attribute with index directly ([1069](https://github.com/imageio/imageio/issues/1069)) ([`05f0b37`](https://github.com/imageio/imageio/commit/05f0b372a7010debb39d2e8a65aed40bf2840f90))
Other
* Update pyav.py ([1070](https://github.com/imageio/imageio/issues/1070)) ([`0bc584e`](https://github.com/imageio/imageio/commit/0bc584ea79eb008be141b4b03bcf088194e219ba))
* Trivial typo fixes ([1072](https://github.com/imageio/imageio/issues/1072)) ([`9d1bced`](https://github.com/imageio/imageio/commit/9d1bced7703fc198f60b1d891cf85a10686822a7))