Merge tag '3.4.2' into develop

3.4.2
Update README.md

Typo in the example
Merge pull request #117 from dwaynebailey/patch-1

Update README.md
Test for issue #119
Merge in latest
Make test more explicit
More logical testing name
Add necessary setting to support feature
Add code to support custom lines after imports
Merge pull request #121 from timothycrosley/feature/fix-issue-119

Feature/fix issue 119
Fix first problem stated in issue #118: make thread explicitly defined as part of the known_standard_library
Add test to ensure desired behaviour described in issue 118 works as expected
Fix spacing of test
Fix test to not care about ordering
Merge lists defined in settings
Handle settings overrides passed directly into the file
Add test to ensure full configurability is still present using 'not_' settings, since settings are no longer fully replaced each time
Add support for excluding values to settings
Add support for excluding settings to direct isort python command
Merge pull request #122 from timothycrosley/feature/fix-issue-118

Feature/fix issue 118