Merge pull request #295 from robertmartin8/revert-293-p39-support

Revert "Add Python 3.9 support [issue 292]"

Author: robertmartin8

.github/workflows/main.yml

@@ -11,14 +11,12 @@ jobs:
         strategy:
             matrix:
                 os: [ubuntu-latest, windows-latest, macos-latest]
-                python-version: [3.9]
+                python-version: [3.8]
                 include:
                     - os: ubuntu-latest
                       python-version: 3.6
                     - os: ubuntu-latest
                       python-version: 3.7
-                    - os: ubuntu-latest
-                      python-version: 3.8
 
         steps:
             - uses: actions/checkout@v2

pipfile

@@ -9,7 +9,7 @@ pandas = ">=0.19"
 cvxpy = "==1.*,>=1.1.10"
 cvxopt = "!=1.2.5.post1,==1.*,>=1.2.0"
 matplotlib = "==3.*,>=3.2.0"
-scikit-learn = "==0.*,>=0.24.1"
+scikit-learn = "==0.*,>=0.19.0"
 
 [dev-packages]
 black = "==20.*,>=20.8.0.b1"