Log Message:
py-virtualenv: updated to 16.7.5

v16.7.5:
Bugfixes
- upgrade pip from 19.2.2 to 19.2.3

v16.7.4:
Bugfixes
- * fix powershell activation when sourced
- * upgrade wheel from 0.33.4 to 0.33.6 and setuptools from 41.1.0 to 41.2.0

v16.7.3:
Bugfixes
- upgrade pip from 19.1.1 to 19.2.2 and setuptools from 41.0.1 to 41.1.0

v16.7.2:
Bugfixes
- fix regression - sh activation script not working under sh (only bash)

v16.7.1:
Features
- pip bumped to 19.2.1

v16.7.0:
Features
- activate.ps1 syntax and style updated to follow PSStyleAnalyzer rules
- Allow creating virtual environments for 3.xy.
- Report error when running activate scripts directly, instead of sourcing. By \ 
reporting an error instead of running silently, the user get immediate feedback \ 
that the script was not used correctly. Only Bash and PowerShell are supported \ 
for now.
- * add pip 19.2 (19.1.1 is kept to still support python 3.4 dropped by latest pip)