A module - error_handlers is added. Errors of every modules may be handled with this module. 'monsters/OUTLINE' is updated. Test script for testing 'error_handlers' module is added into 'tests' module.
The previous error handling mechanism for monsters/MTDescription is replaced with new one - handling errors by 'error_handlers' module. An issue that has possible to redendantly call MTDescription.GET() method from describe() of Monster class is fixed for better performance. A member variable of Monster class holds a description from MTDescription.GET() method now. Related few minor issues are updated.
A file - updates_by_wono.log is added at los/updates directory. All updates/dev progress by wono would be logged within this file.