v0.15.0

Enhancements

• Ability to use regex filters for removing files from the output. See #589 (thanks @jsteel)

Bugfixes

• Fix merging race condition when running tests in parallel and merging them. See #570 (thanks @jenseng)
• Fix relevant lines for unloaded files - comments, skipped code etc. are correctly classified as irrelevant. See #605 (thanks @odlp)
• Allow using simplecov with frozen-string-literals enabled. See #590 (thanks @pat)
• Make sure Array Filter can use all other filter types. See #589 (thanks @jsteel)
• Make sure file names use Simplecov.root as base avoiding using full absolute project paths. See #589 (thanks @jsteel)