emptty: update to 0.6.0.

[kkga]

General

• This is a new package and it conforms to the
  quality requirements

Have the results of the proposed changes been tested?

• I use the packages affected by the proposed changes on a regular basis and
  confirm this PR works for me
• I generally don't use the affected packages but briefly tested this PR

[ericonr]

You should PR an improvement to https://github.com/tvrzna/emptty/blob/master/res/runit-run to support sourcing a conf file, and then pass OPTS to it. Otherwise, you can't really take advantage of the command line flags additions.