Bump version to to 1.8.6 (pyro-ppl#3252)

* Update version in __init__.py

* Run scripts/update_version.py

Bump version to 1.8.5 (pyro-ppl#3222)

Bump version to 1.8.4 (pyro-ppl#3169)

* Bump funsor version

* Bump Pyro version

* Run scripts/update_version.py

Bump to version 1.8.3 (pyro-ppl#3158)

* Bump to version 1.8.3

* Run scripts/update_version.py

Bump version to 1.8.2 (pyro-ppl#3135)

* Bump version to 1.8.2

* Run scripts/update_version.py

* Update to newer seaborn.kdeplot args

* Fix sns.scatterplot

Bump version to 1.8.1 (pyro-ppl#3054)

* Bump pyro and funsor versions

* run scripts/update_version.py

* Revert "remove xfails (pyro-ppl#3048)"

This reverts commit 0c3be04.

Bump to 1.8.0 (pyro-ppl#2994)

* Bump version in __init__.py

* Run scripts/update_version.py

* Fix stale version

* Update versions

Bump to version 1.7.0 (pyro-ppl#2897)

* Bump version to 1.7.0

* Pin funsor to a released version

* Fix update_version.py

* Update tutorial versions

* Update tutorial versions

* Use fehiepsis fix for update_version.py

* Apply update_version.py

Bump to 1.6.0 (pyro-ppl#2777)

* Use torch==1.8.0 and torchvision==0.9.0

* Change version

* Update tutorial versions

Bump to version 1.5.2 (pyro-ppl#2755)