release Hydra 1.1.1 (facebookresearch#1779)

1.0.7 release (facebookresearch#1716)

Hydra 1.1.0 release (facebookresearch#1665)

* Hydra 1.1.0

* merged the release notes of 1.1.0 into 1.1.0.rc1

updated version information in intro

Move Callbacks to hydra._internal.callbacks (facebookresearch#1580)

1.0.6 release

Hydra 1.0.5

[1.0_branch] remove ray example app config (cache_stopped_nodes: true) (

facebookresearch#1146)

This was included by mistake. Leaving this config in would leave instance behind
after example app finishes

Fixed interpolation in instantiate config/params

bump repo version to 1.0.3