V0.2.2 (#19)

* v0.2.2

separate the HPO part into the module flaml.tune
enhanced implementation of FLOW^2, CFO and BlendSearch
support parallel tuning using ray tune
add support for sample_weight and generic fit arguments
enable mlflow logging

Co-authored-by: Chi Wang (MSR) <chiw@microsoft.com>
Co-authored-by: qingyun-wu <qw2ky@virginia.edu>

.github/workflows/python-package.yml

@@ -38,6 +38,10 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install -e .[test]
+      - name: If linux or max, install ray
+        if: matrix.os == 'macOS-latest' or 'ubuntu-latest'
+        run: |
+          pip install -e .[ray]
       - name: Lint with flake8
         run: |
           # stop the build if there are Python syntax errors or undefined names