Bump phpunit/phpunit from 5.7.26 to 5.7.27 in /src
Bump phpunit/phpunit from 5.7.26 to 5.7.27 in /src

Bumps [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) from 5.7.26 to 5.7.27.
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/master/ChangeLog-5.7.md)
- [Commits](https://github.com/sebastianbergmann/phpunit/compare/5.7.26...5.7.27)
md100play/AudioDidact,md100play/AudioDidact,md100play/AudioDidact