Run full test suite in all Python and OS versions

Update copyright date range and version string

Update pefile_test.py

I'll blame case insensitive filesystems...

Update pefile version to 2021.9.2

Update version to 2021.5.24

Update .travis.yml

Use pip3 and python3

Preparing for a small release with the latest speed ups

Updated test blob and setup

Preparing release of version 2018.8.8

Merge branch 'master' of ssh://github.com/erocarrera/pefile