Tulflow

What's Changed
* Bump lxml from 4.6.3 to 4.7.1 by dependabot in https://github.com/tulibraries/tulflow/pull/198
* Update version in setup.py by sensei100 in https://github.com/tulibraries/tulflow/pull/199


**Full Changelog**: https://github.com/tulibraries/tulflow/compare/v0.8.4...v0.8.5

What's Changed
* DEVO-484 Update circleci image and python version by sensei100 in https://github.com/tulibraries/tulflow/pull/191


**Full Changelog**: https://github.com/tulibraries/tulflow/compare/v0.8.3...v0.8.4

What's Changed
* BL-1512 Add 504 error retry in harvest_oai task by ebtoner in https://github.com/tulibraries/tulflow/pull/178

New Contributors
* ebtoner made their first contribution in https://github.com/tulibraries/tulflow/pull/178

**Full Changelog**: https://github.com/tulibraries/tulflow/compare/v0.8.2...v0.8.3

* Update more places where utf-8 encoding is not being explicitly used.