Fix #223: update python versions in travis.

- remove python version unsupported by pyfakefs from testing in Travis,
- add python 3.8.

.travis.yml

@@ -3,11 +3,6 @@ matrix:
   include:
 
     # Full tests (with online API)
-    - os: linux
-      language: python
-      python: 2.7
-      env:
-        - TO_TEST=TEST_FULL
     - os: linux
       language: python
       python: 3.7
@@ -15,16 +10,6 @@ matrix:
       sudo: true
       env:
         - TO_TEST=TEST_FULL
-    - os: osx
-      language: generic
-      python: 2.7
-      env:
-        - TO_TEST=TEST_FULL
-      # before_install:
-      #   - python2 --version
-      #   - pip2 install -U virtualenv
-      #   - virtualenv env -p python2
-      #   - source env/bin/activate
     - os: osx
       language: generic
       python: ">=3.6"
@@ -38,28 +23,25 @@ matrix:
     # Mock tests (with mock API)
     - os: linux
       language: python
-      python: 3.3
-      env:
-        - TO_TEST=TEST_MOCK
-    - os: linux
-      language: python
-      python: 3.4
+      python: 3.5
       env:
         - TO_TEST=TEST_MOCK
     - os: linux
       language: python
-      python: 3.5
+      python: 3.6
       env:
         - TO_TEST=TEST_MOCK
     - os: linux
       language: python
-      python: 3.6
+      dist: xenial
+      python: 3.7
+      sudo: true
       env:
         - TO_TEST=TEST_MOCK
     - os: linux
       language: python
       dist: xenial
-      python: 3.7
+      python: 3.8
       sudo: true
       env:
         - TO_TEST=TEST_MOCK
@@ -76,7 +58,7 @@ matrix:
       language: python
       dist: xenial
       sudo: true
-      python: 3.7
+      python: 3.8
       env:
         - TO_TEST=INSTALL
       if: type = cron
@@ -94,7 +76,7 @@ matrix:
       if: type = cron
 
   allow_failures:
-    - python: 3.3
+    - python: 2.7
 
 # command to run tests
 script:

readme.md

@@ -15,7 +15,7 @@ correct bugs, but have no short-term plans to add major features to it. Pubs doe
 is supposed to do: help us do science, so now we are mostly doing that.
 
 **Notice:** pubs is relatively stable but comes with no warranty; do keep backups of your data.
-**Notice:** pubs currently works with Python 2.7, but support will be dropped as soon as maintaining it becomes tedious.
+**Notice:** pubs currently works with Python 2.7, but support is being dropped (tests are not run anymore).
 
 ## Installation