* siri/logger/post-21-continues/OTP-15132:
[logger] Read config before terminating handler process
[error_logger] Handle report_cb with arity 2
[proc_lib] Improve crash reports for single line logging
[logger] Include single_line option to report_cb
[logger] Check for deadlock when removing filters
[logger] Fix spec for handler callbacks to always return ok
[logger] Increase timetrap timer for handler_requests_under_load test
[logger] Improve code coverage in test
[logger] Refactor, and add error detection for configuration
[logger] Fix logger_disk_log_h_SUITE:sync and add som debug info
[logger] Update doc about file options in logger_std_h
[logger] Remove encoding option from logger_formatter
Remove outdated reference to error loggers
[logger] Refactor some logger internals