update dependencies
update dependencies

 - sebastian/comparator updated from 2.0.2 to 2.1.1
   See changes: https://github.com/sebastianbergmann/comparator/compare/2.0.2...2.1.1
   Release notes: https://github.com/sebastianbergmann/comparator/releases/tag/2.1.1

 - phpunit/phpunit-mock-objects updated from 4.0.4 to 5.0.5
   See changes: https://github.com/sebastianbergmann/phpunit-mock-objects/compare/4.0.4...5.0.5
   Release notes: https://github.com/sebastianbergmann/phpunit-mock-objects/releases/tag/5.0.5

 - phpunit/php-file-iterator updated from 1.4.2 to 1.4.5
   See changes: https://github.com/sebastianbergmann/php-file-iterator/compare/1.4.2...1.4.5
   Release notes: https://github.com/sebastianbergmann/php-file-iterator/releases/tag/1.4.5

 - phpunit/php-token-stream updated from 2.0.1 to 2.0.2
   See changes: https://github.com/sebastianbergmann/php-token-stream/compare/2.0.1...2.0.2
   Release notes: https://github.com/sebastianbergmann/php-token-stream/releases/tag/2.0.2

 - phpunit/php-code-coverage updated from 5.2.2 to 5.3.0
   See changes: https://github.com/sebastianbergmann/php-code-coverage/compare/5.2.2...5.3.0
   Release notes: https://github.com/sebastianbergmann/php-code-coverage/releases/tag/5.3.0

 - phpdocumentor/reflection-docblock updated from 4.1.1 to 4.2.0
   See changes: https://github.com/phpDocumentor/ReflectionDocBlock/compare/4.1.1...4.2.0
   Release notes: https://github.com/phpDocumentor/ReflectionDocBlock/releases/tag/4.2.0

 - phpspec/prophecy updated from v1.7.2 to 1.7.3
   See changes: https://github.com/phpspec/prophecy/compare/v1.7.2...1.7.3
   Release notes: https://github.com/phpspec/prophecy/releases/tag/1.7.3

 - phpunit/phpunit updated from 6.4.3 to 6.5.5
   See changes: https://github.com/sebastianbergmann/phpunit/compare/6.4.3...6.5.5
   Release notes: https://github.com/sebastianbergmann/phpunit/releases/tag/6.5.5

mikey179/bovigo-assert