Updated R docs and error message to reflect recent updates. (mlflow#1709

)

Documents newly added environment variables pointing to python and mlflow executable in R client.

Merge changelog from mlflow#1648

small documentation changes (mlflow#1390)

Updating changelog and mlflow version in preparation for 0.9.1 release (

mlflow#1151)

* Updating changelog and mlflow version in preparation for 0.9.1 release
* Update CHANGELOG.rst

[0.9.0] Update release version to 0.9.0 + changelog (mlflow#997) (mlf…

…low#1012)

* 0.9.0 changelogs / release notes
* bump release version to 0.9.0

Merge branch 'branch-0.8' of https://github.com/mlflow/mlflow into br…

…anch-0.8

Azure artifact store: fix path resolution error when artifact root is…

… container root (mlflow#769)

* Fix relative path resolution in azure blob artifact repo

* Add test

* Naming change

* Validate that blob names begin with artifact path

* Add negative test case

* Lint

* test fix

Update release version to 0.8.0 (mlflow#699)

Fix issue with mlflow.start_run(run_uuid=<deleted_run>) (mlflow#579)

* init

* fix lint

Fix issue with mlflow.start_run(run_uuid=<deleted_run>) (mlflow#579)

* init

* fix lint