introduce the UserManager interface
Merge pull request #4 from sstok/user-manager

merge #4 introduce the UserManager interface (sstok)

This PR was merged into rollerworks:master branch.

Discussion
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|Q            |A  |
|---          |---|
|Bug Fix?     |no |
|New Feature? |yes|
|BC Breaks?   |no |
|Deprecations?|no |
|Tests Pass?  |no |
|Fixed Tickets|   |
|License      |MIT|
                   


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Commits
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537848ae827b7c3439a180440d119b2b71f71990 ignore composer.lock (sstok)
0f6711124dae977ed86b2e38078f808d57a9fc37 introduce the UserManager interface (sstok)