make RaumZeitChef options available via Getopt
get rid of Sys::Syslog in favour of ::Log

this makes development a lot easier, since we just output
everything to stdout. Thanks to systemd, this ends up
correctly in our logs.
get rid of Method::Signatures::Simple to get correct line numbers
manually resolve hackint server to connect faster
move "event" sugar from ::Plugin to ::IRC::Event
Makefile.PL: update dependencies
kill all Method::Signatures::Simple cool aid
prune some RaumZeitMPD mentions
MANIFEST.SKIP was to lax, it lists regexes, not shell globs
README.md: provide correct update instructions
update debian/
completely overhaul the plugin system
update debian/control
add .gitignore
update Description and Homepage in debian/control
delete outdated debian/raumzeitmpd*
add .service file, fix debian packaging
use Log::Dispatch in Log.pm

Our hand roled logging functions didn't handle multiline errors.
This also paves the way to use Log::Dispatch::Journald someday.
(it isn't currently packaged in Debian)