Prepare for coding style checking
Fix indentation
Fix multi-line blocks.
Enforce to use 'Compact' style in class/module definition.
Use `[]' instead of `Array.new'.
Try to find the player by id and PlayerID with `||' operator.
Use `if' modifier.
Fix indentation for arrays.
Supress rubocop error in lib/parser/*.rb because it is expected behavior.
Remove redundant `self'.
Remove two or more spaces before the first arg.
Add space after `{` and before `}'.
Use `$PROGRAM_NAME' instead of `$0'.
Use `'` instead of `"' if it is no need to use interpolation.
Ensure there is *one* new line at the end of file.
Remove trailing whitespaces.
Use `_' for unused block parameter.