PR: Add a tool to check if updates are available for GWHAT.

[jnsebgosselin]

This PR is a step forward for fixing Issue #112.

The objective of this PR is to add a tool that will allow the user to easily checks if updates are available for GWHAT.

[pep8speaks]

Hello @jnsebgosselin! Thanks for updating the PR.

• In the file gwhat/mainwindow.py, following are the PEP8 issues :

Line 42:1: E402 module level import not at top of file

• In the file gwhat/tests/test_tabwidget.py, following are the PEP8 issues :

Line 77:80: E501 line too long (80 > 79 characters)
Line 78:80: E501 line too long (82 > 79 characters)
Line 79:80: E501 line too long (81 > 79 characters)
Line 80:80: E501 line too long (95 > 79 characters)

Comment last updated on December 13, 2017 at 18:04 Hours UTC