v0.1.12: [ TP-41199 ] - Mask secret values in auth logs

* update regex to match secret inside stringified hashes

v0.1.11

Updated to ruby 2.4+. Updated travis credentials. Added bundle audit.…

v0.1.9

Added formatter= method to better match ruby's generic logger methods…

v0.1.8

Bump version

v0.1.7

Bump gem version

v0.1.6

Bump gem version

v0.1.5

Bump gem version

v0.1.4

Fixed a bug in Log.add that would cause the severity to be set to 5 even if something else was passed in.

v0.1.3

Bump gem version

v0.1.2

Make timestamp correct for Loggly json parsing