postinst/prerm are only for the 'twine' package itself, not the library.
Include /etc/default/twine-writer, with the daemon disabled by default
Clean up output of init script when START is not 'yes'
Make not-configured-to-start warning a one-liner; don't exit with a failure status if 'restart' or 'force-reload' are invoked when START is not 'yes'
Install /etc/default/twine-writer
Merge branch 'develop' of rcbuilder.ch.internal:oss/twine into develop