Log Message:
devel/ruby-simplecov: update to 0.15.1

0.15.1 (2017-09-11)
=======

## Bugfixes

* Filter directories outside SimpleCov.root that have it as a prefix. See \ 
[#617](https://github.com/colszowka/simplecov/pull/617) (thanks @jenseng)
* Fix standard rails profile rails filter (didn't work). See \ 
[#618](https://github.com/colszowka/simplecov/pull/618) (thanks @jenseng again!)