Need to use git master branch for testing

Author: rocky

.github/workflows/macos.yaml

@@ -25,10 +25,10 @@ jobs:
         python3 -m pip install --upgrade pip
         # Can comment out when next Mathics core and Mathics-scanner are released
         # python3 -m pip install -e git+https://github.com/Mathics3/mathics-scanner#egg=Mathics-Scanner[full]
-        # python -m pip install -e git+https://github.com/Mathics3/mathics-core#egg=Mathics3[full]
-        # git clone https://github.com/Mathics3/mathics-core
-        # (cd mathics-core && pip3 install -e .[full])
-        # (cd mathics-core && bash ./admin-tools/make-op-tables.sh)
+        python -m pip install -e git+https://github.com/Mathics3/mathics-core#egg=Mathics3[full]
+        git clone https://github.com/Mathics3/mathics-core
+        (cd mathics-core && pip3 install -e .[full])
+        (cd mathics-core && bash ./admin-tools/make-op-tables.sh)
         python -m pip install Mathics3[full]
     - name: Install mathicsscript
       run: |

.github/workflows/ubuntu.yml

@@ -23,12 +23,12 @@ jobs:
         sudo apt-get update -qq && sudo apt-get install -qq liblapack-dev llvm-dev asymptote
         python3 -m pip install --upgrade pip
         # Can comment out when next Mathics core and Mathics-scanner are released
-        # python -m pip install -e git+https://github.com/Mathics3/mathics-scanner#egg=Mathics-Scanner[full]
+        python -m pip install -e git+https://github.com/Mathics3/mathics-scanner#egg=Mathics-Scanner[full]
         # python -m pip install -e git+https://github.com/Mathics3/mathics-core#egg=Mathics3[full]
-        # git clone https://github.com/Mathics3/mathics-core
-        # (cd mathics-core && pip3 install -e .[full])
-        # (cd mathics-core && bash ./admin-tools/make-op-tables.sh)
-        # python -m pip install Mathics3[full]
+        git clone https://github.com/Mathics3/mathics-core
+        (cd mathics-core && pip3 install -e .[full])
+        (cd mathics-core && bash ./admin-tools/make-op-tables.sh)
+        python -m pip install Mathics3[full]
         pip install -e .
     - name: Install mathicsscript
       run: |

.github/workflows/windows.yml

@@ -26,9 +26,9 @@ jobs:
         set LLVM_DIR="C:\Program Files\LLVM"
         # Can comment out when next Mathics core and Mathics-scanner are released
         # python -m pip install -e git+https://github.com/Mathics3/mathics-scanner#egg=Mathics-Scanner[full]
-        # git clone https://github.com/Mathics3/mathics-core
-        # bash -c '(cd mathics-core && pip3 install -e .[full])'
-        # bash -c '(cd mathics-core && bash ./admin-tools/make-op-tables.sh)'
+        git clone https://github.com/Mathics3/mathics-core
+        bash -c '(cd mathics-core && pip3 install -e .[full])'
+        bash -c '(cd mathics-core && bash ./admin-tools/make-op-tables.sh)'
         python -m pip install Mathics3[full]
     - name: Install mathicsscript
       run: |