[logback-dev] [qos-ch/logback] 60952e: require slf4j-api 1.7.15

[Ceki Gulcu]

  Branch: refs/heads/master
  Home:   https://github.com/qos-ch/logback
  Commit: 60952eb10e858e87bb6429b29a79c9a5f307ebe0
      https://github.com/qos-ch/logback/commit/60952eb10e858e87bb6429b29a79c9a5f307ebe0
  Author: Ceki Gulcu <ceki at qos.ch>
  Date:   2016-02-25 (Thu, 25 Feb 2016)

  Changed paths:
    M logback-site/src/site/pages/dependencies.html

  Log Message:
  -----------
  require slf4j-api 1.7.15