Log Message:
py-test: updated to 3.4.2

Pytest 3.4.2:

Bug Fixes
Removed progress information when capture option is no.
Refactor check of bindir from exists to isdir.
Fix TypeError issue when using approx with a Decimal value.
Fix reference cycle generated when using the request fixture.
[tool:pytest] sections in *.cfg files passed by the -c option are now properly \ 
recognized.

Improved Documentation
Add logging plugin to plugins list.

Trivial/Internal Changes
Fix minor typo in fixture.rst