Discontinue python 3.5 support (EOL reached)

Signed-off-by: JoeLametta <JoeLametta@users.noreply.github.com>

.travis.yml

@@ -3,7 +3,6 @@ dist: xenial
 
 language: python
 python:
-  - "3.5"
   - "3.6"
   - "3.7"
   - "3.8"
@@ -18,6 +17,7 @@ env:
 
 jobs:
   allow_failures:
+   - python: "3.5"
    - python: "3.9-dev"
   include:
   - python: 3.8

README.md

@@ -8,7 +8,7 @@
 [![GitHub Issues](https://img.shields.io/github/issues/whipper-team/whipper.svg)](https://github.com/whipper-team/whipper/issues)
 [![GitHub contributors](https://img.shields.io/github/contributors/whipper-team/whipper.svg)](https://github.com/whipper-team/whipper/graphs/contributors)
 
-Whipper is a Python 3 (3.5+) CD-DA ripper based on the [morituri project](https://github.com/thomasvs/morituri) (_CDDA ripper for *nix systems aiming for accuracy over speed_). It started just as a fork of morituri - which development seems to have halted - merging old ignored pull requests, improving it with bugfixes and new features. Nowadays whipper's codebase diverges significantly from morituri's one.
+Whipper is a Python 3 (3.6+) CD-DA ripper based on the [morituri project](https://github.com/thomasvs/morituri) (_CDDA ripper for *nix systems aiming for accuracy over speed_). It started just as a fork of morituri - which development seems to have halted - merging old ignored pull requests, improving it with bugfixes and new features. Nowadays whipper's codebase diverges significantly from morituri's one.
 
 Whipper is currently developed and tested _only_ on Linux distributions but _may_ work fine on other *nix OSes too.
 

setup.py

@@ -8,7 +8,7 @@ setup(
     maintainer=['The Whipper Team'],
     url='https://github.com/whipper-team/whipper',
     license='GPL3',
-    python_requires='>=3.5',
+    python_requires='>=3.6',
     packages=find_packages(),
     setup_requires=['setuptools_scm'],
     ext_modules=[