Fixed syntax error in IrcOutput example.

	modified:   irc.rst
Merge pull request #1051 from russellballestrini/rb-fix-defect-in-irc-example

Fixed syntax error in IrcOutput example.
Added MultiDecoder dependency ordering to address #1045
Added tests for nested MultiDecoders and added fixes as highlighted in #1052
Merge remote-tracking branch 'upstream/dev' into dev
Added bugfix note in CHANGES
Merge pull request #1052 from JustinJudd/dev

Added MultiDecoder dependency ordering to address #1045
Support environmental variables in config.