Merge branch 'main' into dev

.travis.yml

@@ -2,13 +2,16 @@ language: python
 dist: xenial
 
 python:
-  - "3.6"
-  - "3.7"
+#  - "3.6"
+#  - "3.7"
   - "3.8"
   - "3.9"
 
 install:
   - pip install --upgrade pip
+  - pip list
+  - pip install importlib-metadata>=4.0.0
+  - pip install setuptools>=49.6.0
   - pip install -r requirements.txt
   - pip install -r requirements_ci.yml
 

requirements_ci.yml

@@ -3,3 +3,4 @@ pytest-cov==2.10.0
 coveralls==2.1.1
 setuptools>=49.6.0
 tqdm>=4.62.3
+