* Precision-Recall Curve feature update

* sentinel value update

* add contrast to conf/class against bbox rectangle color

* added feature to save conf in txt labels

* Update general.py

* Update detect.py

* Update detect.py

* Update detect.py

save_conf variable removed as only used once, so we can use opt.save_conf instead.

* Update detect.py

* Update detect.py

Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>

Co-authored-by: swsong <swsong@stratosphere.mobi>

* fix/hyper

* Hyp giou check to train.py

* restore general.py

* train.py overwrite fix

* restore general.py and pep8 update

Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>

* comment

* fix parsing

* fix evolve

* folder

* tqdm

* Update train.py

* Update train.py

* reinstate anchors into meta dict

anchor evolution is working correctly now

* reinstate logger

prefer the single line readout for concise logging, which helps simplify notebook and tutorials etc.

Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>

img size checks are warnings rather than errors, so current implementation allows improperly formed model inputs.

* initial commit

* Update general.py

Indent update

* Update general.py

refactor duplicate code

* 200 dpi

* added option to not open on save

* Update detect.py

Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>

* Fix increment_dir to use run_xxx for logdir 

Rerunning train.py with logdir in the form of `run_xxx` causes index slicing in
```
n = max([int(x[len(dir):x.find('_') if '_' in Path(x).name else None]) for x in d]) + 1  # increment
```
to underflow.

* Replace find with rfind

* Update ci-testing.yml

* Update yolo.py

* Update ci-testing.yml

* Update export.py

* Update yolo.py

fix a bug in load_mosaic

* add the configuration to deploy yolov5 in a docker container in app engine on google cloud

* remove the duplicated requirements, place the google app engine files in utils

* remove the unused requirements

Co-authored-by: guilhembau <guilhem@6dbytes.com>

* feat: add rtmp support

* Update detect.py

pass tuple to source.startswith()

Co-authored-by: ryan.fu <ryan.fu@aylaasia.com>
Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>