changelog-0.5.1-to-0.6

changelog from version 0.5.1 to 0.6.0 - released 2016.7.4

. internal refactoring to give more feedback while checking db schema

. output of commands on the cli has changed

. checkstorage command has gained an option to only validate offending rows for foreign keys, not mismatched column definitions
  (useful because in the default eZPublish database schema there are still some violations)