dropping support for python 2.7 - first probe

.travis.yml

@@ -2,7 +2,6 @@ language: python
 # ===== Linux ======
 dist: xenial
 python:
-  - 2.7
   - 3.5
   - 3.6
   - 3.7
@@ -19,17 +18,6 @@ matrix:
   #   - os: windows
   include:
     # ======= OSX ========
-    - name: "Python 2.7.14 on macOS 10.13"
-      os: osx
-      osx_image: xcode9.3  # Python 2.7.14_2 running on macOS 10.13
-      language: shell       # 'language: python' errors on Travis CI macOS
-      before_install:
-        - python --version
-        - pip install pytest --user
-        - pip install codecov --user
-      install: pip install ".[test]" --user
-      script: python -m pytest  # pytest command won't be found
-      after_success: python  -m codecov  # codecov command won't be found
     - name: "Python 3.6.5 on macOS 10.13"
       os: osx
       osx_image: xcode9.4  # Python 3.6.5 running on macOS 10.13
@@ -57,16 +45,6 @@ matrix:
       script: python3 -m pytest
       after_success: python3 -m codecov
     #  ====== WINDOWS =========
-    - name: "Python 2.7.16 on Windows"
-      os: windows           # Windows 10.0.17134 N/A Build 17134
-      language: shell # 'language: python' errors Travis CI Windows
-      before_install:
-        - choco install python2
-        - python --version
-        # - python -m pip install --upgrade pip
-        - pip install --upgrade pytest
-        - pip install codecov
-      env: PATH=/c/Python27:/c/Python27/Scripts:$PATH
     - name: "Python 3.5.4 on Windows"
       os: windows           # Windows 10.0.17134 N/A Build 17134
       language: shell       # 'language: python' is an error on Travis CI Windows

setup.py

@@ -43,7 +43,6 @@ setup(
     ],
     extras_require={
         'test': TEST_REQUIRES,
-        ':python_version == "2.7"': ['futures'],
     },
     platforms=['linux', 'osx', 'windows'],
     keywords=['cache', 'persistence', 'mongo', 'memoization', 'decorator'],
@@ -53,8 +52,6 @@ setup(
         'Development Status :: 4 - Beta',
         'License :: OSI Approved :: MIT License',
         'Programming Language :: Python',
-        'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',