Add some basic tests for EnsureSingleSpaceBeforeTokenChecker
Add a failing test for EnsureSingleSpaceBeforeTokenChecker
Fix failing test for EnsureSingleSpaceBeforeTokenChecker
Merge pull request #116 from bensymonds/fix-ensure-space-before

Fix bug: `EnsureSingleSpaceBeforeTokenChecker` when there is a newline after token