v1.0.3: hotfix: better string generation with random_bytes (#20)

Missing bin2hex to have strings only

Add support for PHP 7.1

feat: update random lib for php 7.1 (#19)

* feat: update random lib for php 7.1

* fix deps

* fix until randomlib is fixed

* useless blank line

v1.0.1

Remove final state (#18)

v1.0.0

• Add unit tests
• Fix #16
• Update Travis configuration