Wandb

:bug: Bug Fix

- ensure DNS lookup failures can't prevent startup
- centralized debug logging
- wandb agent waits longer to send a SIGKILL after sending SIGINT

:nail_care: Enhancement

- support for logging docker images with the WANDB_DOCKER env var
- WANDB_DOCKER automatically set when run in kubernetes
- new wandb-docker-run command to automatically set env vars and mount code
- wandb.restore supports launching docker for runs that ran with it
- python packages are now recorded and saved in a requirements.txt file
- cpu_count, gpu_count, gpu, os, and python version stored in wandb-metadata.json
- the export api now supports docker-like paths, i.e. username/project:run_id
- better first time user messages and login info

:bug: Bug Fix

- Improve error reporting for sweeps

:bug: Bug Fix

- fixed Jupyter logging, don't change logger level
- fixed resuming in Jupyter

:nail_care: Enhancement

- wandb.init now degrades gracefully if a user hasn't logged in to wandb
- added a **force** flag to wandb.init to require a machine to be logged in
- Tensorboard and TensorboardX logging is now automatically instrumented when enabled
- added a **tensorboard** to wandb.init which patches tensorboard for logging
- wandb.save handles now accepts a base path to files in sub directories
- wandb.tensorflow and wandb.tensorboard can now be accessed without directly importing
- `wandb sync` will now traverse a wandb run directory and sync all runs

:bug: Bug Fix

- Fixed race where wandb process could hang at the end of a run

:bug: Bug Fix

- Fix resuming in Jupyter on kernel restart
- wandb.save ensures files are pushed regardless of growth

:nail_care: Enhancement

- Added replace=True keyword to init for auto-resuming
- New run.resumed property that can be used to detect if we're resuming
- New run.step property to use for setting an initial epoch on resuming
- Made Keras callback save the best model as it improves

:bug: Bug Fix

- Really don't require numpy
- Better error message if wandb.log is called before wandb.init
- Prevent calling wandb.watch multiple times
- Handle datetime attributes in logs / plotly

:nail_care: Enhancement

- Add environment to sweeps
- Enable tagging in the public API and in wandb.init
- New media type wandb.Html for logging arbitrary html
- Add Public api.create_run method for custom integrations
- Added glob support to wandb.save, files save as they're written to
- Added wandb.restore for pulling files on resume