Major changes
+ Drops support for no longer maintained versions of Node.js 776 747
+ Removes `v` from log lines 623 620
+ Logs literal `null` 711 706
+ Adds formatters for core log components (a powerful new way to customize how log lines are rendered; thank you delvedor) 775 764
+ Softens language around the modes of logging available 791 785
+ Removes implicit appending of objects to message strings (see below) 795 793
+ Codifies LTS policy going forward 799
Implicit formatting removed 795
Previously, Pino emulated Bunyan's behavior when interpreting logs like:
1. `log.info('a message', { an: 'object'})`
1. `log.info('a', 'silly', 'message')`
The old behavior would result in 1 yielding `"msg":"a message {\"an\":\"object\"}"` and 2 yielding
`"msg":"a silly message"`. As of this release, 1 will yield `"msg":"a message"` and 2 will yield `"msg":"a"`.
To get the same results in Pino v6 as in previous releases actual format identifiers should be provided, e.g.:
1. `log.info('a message %j', { an: 'object' })`
1. `log.info('a %s %s', 'silly', 'message')`