Added support for basic_config()
Added
- Added basic_config() method for LoggerManager analogous to that
of Python's logger. - Also added overload of get_logger() with no name argument which
returns the root logger. (Again as per Python.) - Added example/basic_config/basic_config.F90 (requires MPI)
Fixed
- minor bug in default fmt_ for MpiFormatter
"rank" should have been "mpi_rank".