Logger for panto.
const logger = require('panto-logger');
logger.setLevel('log');
logger.setOutStream(fs.createWriteStream('/log.log', {flags: 'a'});)
data('record data message');
help('record help message');
debug('record debug message');
info('record info message');
warn('record warn message');
error('record error message').then(()=>{
// record complete
});