v0.1.9

What's Changed

• [release] Bump to 0.1.9 for future development by @matthewdeng in #199
• Update README.md by @Yard1 in #200
• Mitigate finishing too quickly by @Yard1 in #203
• Adjust readme for Ray Docs by @Yard1 in #204
• Fail quickly on Windows by @amogkam in #209
• Fix test_num_parallel_tree for cutting edge CI by @Yard1 in #211
• Fix CI failing with xgboost==1.6.0 by @Yard1 in #212
• Adjust CI timeouts by @Yard1 in #213
• Fix sklearn docs throwing an error during build by @Yard1 in #214
• Fix wrap_evaluation_matrices with xgb master by @Yard1 in #215
• Remove code for legacy Ray versions by @krfricke in #217
• Remove support for deprecated ray.util.data.MLDataset by @amogkam in #218

Full Changelog: v0.1.8...v0.1.9