Remove redundant check for an event in runner_spec
Remove SolrProcessor
Always log information about finishing processing
Add LoggerMessages
Simplify? LoggerMessages
Revert "Simplify? LoggerMessages"

This reverts commit d5c86b6c5692ed8d7f60b61a358ec110944b8808.
Observer::Logger accepts messages as a Hash
Name subroutine should be first
Add file_logger example to Migrator example
Do not send empty messages by Messenger
Add sender name to Messenger
Use Logger directly by add method
Initialize messages after logger
Add warn message if creating a new directory
rename presenter => messages due to namechange of LoggerMessages