Merge tag '3.9.2' into develop

3.9.2
Reference support for 3.4 in setup.py file
Add test for placement control with shared package prefixes (issue #202)
Improve placement control (closes #202)
Merge pull request #209 from hartwork/improve-placement-control

Improve placement control (issue #202, fix and test)
Add Sebastian Pipping (@hartwork) to acknowledgements file
Add line width argument to command line and mark lines argument as deprecated
Merge pull request #211 from timothycrosley/feature/fix-ticket-210

Add line width argument to command line and mark lines argument as depre...
Bump pies requirement
Bump release to 3.9.3
Merge branch 'release/3.9.3'