remove windows and macosx tests, will add to master after release

Author: rflamary

.travis.yml

@@ -1,13 +1,10 @@
 dist: xenial   # required for Python >= 3.7
 language: python
 matrix:
-  allow_failures:
-      - os: osx
-      - os: windows
+  # allow_failures:
+  #     - os: osx
+  #     - os: windows
   include:
-    - os: osx
-      sudo: required
-      language: generic
     - os: linux
       sudo: required
       python: 3.5
@@ -20,11 +17,14 @@ matrix:
     - os: linux
       sudo: required
       python: 2.7
-    - name: "Python 3.7.3 on Windows"
-      os: windows           # Windows 10.0.17134 N/A Build 17134
-      language: shell       # 'language: python' is an error on Travis CI Windows
-      before_install: choco install python
-      env: PATH=/c/Python37:/c/Python37/Scripts:$PATH
+    # - os: osx
+    #   sudo: required
+    #   language: generic
+    # - name: "Python 3.7.3 on Windows"
+    #   os: windows           # Windows 10.0.17134 N/A Build 17134
+    #   language: shell       # 'language: python' is an error on Travis CI Windows
+    #   before_install: choco install python
+    #   env: PATH=/c/Python37:/c/Python37/Scripts:$PATH
 before_install:
   - ./.travis/before_install.sh
 # command to install dependencies