2 Package logger contains filters and handles for the logging utilities in Revel.
3 These facilities all currently use the logging library called log15 at
4 https://github.com/inconshreveable/log15
6 Defining handlers happens as follows
7 1) ALL handlers (log.all.output) replace any existing handlers
8 2) Output handlers (log.error.output) replace any existing handlers
9 3) Filter handlers (log.xxx.filter, log.xxx.nfilter) append to existing handlers,
10 note log.all.filter is treated as a filter handler, so it will NOT replace existing ones