Before removing obsolete react_task_demo MTurk task

Before removing obsolete qualification_flow_example MTurk task

v0.9.4 release (facebookresearch#3203)

Bump to v0.9.3. (facebookresearch#3125)

# v0.9.3 Release

Known issues
- Short options like `-m` and `-t` do fail in Python 3.8. Use `--model` and `--task`

Breaking Changes
- A number of old MTurk tasks have been archived and removed from the code (facebookresearch#3085)

New Features
- [image] Detectron feature extraction (facebookresearch#3083)
- [data] Natural questions (facebookresearch#3070)
- [data] TaskMaster-2 (facebookresearch#2678)
- [data] New versions of multiwoz (facebookresearch#3072)
- [distributed] Allow non-tcp based distributed setup (facebookresearch#3095)
- [core] Move torch.load/torch.save to PathManager. (facebookresearch#3094, facebookresearch#3077)
- [mturk] New task on static turn annotations (facebookresearch#3053)
- [mturk] New features in human+model annotation (facebookresearch#3006)
- [core] TorchClassifierAgent now prints its number of prameters (facebookresearch#3086)

Doc Changes:
- New Worlds tutorial (facebookresearch#3049)
- Tutorial on using `-t jsonfile` (facebookresearch#3061)
- Better help message for --init-model (facebookresearch#3090)
- Additions to FAQ (facebookresearch#3073)
- Updated model zoo descriptions for BlenderBot (facebookresearch#3096)

Bug Fixes
- Distributed evaluation now writes to world logs earlier (facebookresearch#3122)
- An argument was updated from store_true to bool (facebookresearch#3113)
- Self-chat now fails loudly with unexpected batchsize (facebookresearch#3081)
- Update drqa default tokenizer away from removed (facebookresearch#3069)
- Using wizard of wikipedia in interactive mode downloads data (facebookresearch#3079)

Developer notes:
- New pre-commit git-secrets (facebookresearch#3106)
- Code coverage improvements (facebookresearch#3110, facebookresearch#3091)
- More reliable tests. (facebookresearch#3108, facebookresearch#3097, facebookresearch#3055)
- Mephisto task dependencies have been updates due to security bugs (facebookresearch#3111, facebookresearch#3101, facebookresearch#3104)
- MTurk config folders are exempt from __init__.py requirements (facebookresearch#3105)

[tests] Switch to OverfitTeacher for some model tests. (facebookresea…

…rch#3055)

* [tests] Switch to OverfitTeacher for some model tests.

* Black.

* Improve on distributed training.

* Screw this test.

* Try lowering parallelism.

* Looser requirements on test_distributed.

* Speed up drqa test.

* Faster dynamic batch test.

* Speed up deepcopies of opts.

* Fewer deepcopies.

* Verify data relaxation.

* Robust

* Lint.

* make hred more reliable

* try again.

* Speed up beam block test.

* Speed up more generation tests.

* Bring back one more retry.

* Whopos.

* Always kill process group i  guess.

* We can save the company some $

* Another test combo failure.

* Lint.

* Use constants.

Fix typo in tensorboard. (facebookresearch#3067)

* Fix typo in tensorboard.

* Bump version too (0.9.2)

Version 0.9.1. (facebookresearch#3056)

* Version 0.9.1.

* Black.

Tie off release 0.9.0. (facebookresearch#2987)

Tie off release version 0.8.0 (facebookresearch#2879)

* Tie off release version 0.6.0

* Bump to 0.8.0.

* Lint.

Messing with badges. (facebookresearch#2852)

* Messing with badges.

* More.

* Typo.