v1.18

• pytest: do not report setup fixtures as separate tests (#91)
• pytest: better test location presentation
• pytest: support for pytest-pep8 and pytest-lint plugins
• nose: make sure to turn reason into string when skipping test #98 (Piyush Gupta, https://github.com/piyushg91)
• twisted: fix twisted failure test reporting #88 (Alexey Larkov, https://github.com/gmlexx)
• flake8: better test name #89 (Marc Abramowitz, https://github.com/msabramo)
• Don't force a newline at the start of service messages #90 (Gary Donovan, https://github.com/garyd203)