Update release notes for 1.1.3

Added note for thread naming -- from Mikhail Mazursky (PR #187)
Revert "Added relativePath to parent."

This reverts commit 495929dc9620f1f0fbfcd8da73afaee16da946f2.

parent.relativePath was being set to the default value unnecessarily.
LOGBACK-611 Allow specifying time zone in TimeBasedRollingPolicy's fileNamePattern
Merge pull request #196 from washley/master

Allow specifying time zone in TimeBasedRollingPolicy's fileNamePattern

LOGBACK-611
Merge pull request #195 from hazendaz/master

POM Modernization