Update packaging and Travis config

.travis.yml

@@ -2,16 +2,11 @@ language: python
 python:
   - "3.6"
   - "3.5"
-  - "3.4"
-  - "3.3"
-  - "2.7"
 # command to run tests
 script: nosetests
 # Ensure dependencies are installed
 install:
   - pip install requests requests_download jinja2 yarg win_cli_launchers testpath
-  - if [[ ${TRAVIS_PYTHON_VERSION} == '2.7' ]]; then pip install configparser pathlib2; fi
-  - if [[ ${TRAVIS_PYTHON_VERSION} == '3.3' ]]; then pip install pathlib2; fi
 
 # Enable new Travis stack, should speed up builds
 sudo: false

flit.ini

@@ -5,19 +5,17 @@ author-email = thomas@kluyver.me.uk
 dist-name = pynsist
 home-page = https://pynsist.readthedocs.io/en/latest/
 description-file = README.rst
+requires-python = >=3.5
 requires = requests
     requests_download
     jinja2
     yarg
     win_cli_launchers
-    configparser; python_version == '2.7'
-    pathlib2; python_version == '2.7' or python_version == '3.3'
 dev-requires = testpath
 classifiers = License :: OSI Approved :: MIT License
     Intended Audience :: Developers
     Environment :: Win32 (MS Windows)
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 2.7
     Topic :: Software Development
     Topic :: System :: Installation/Setup
     Topic :: System :: Software Distribution