Changelog for s6-linux-init.

In 0.3.1.1
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 - Build bug fix from 0.3.1.0.


In 0.3.1.0
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 - Support for running in Linux containers


In 0.3.0.0
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 - Added this NEWS file. :)
 - Major types overhaul to make them more POSIXly correct:
compatibility with skalibs-2.5.0.0.