- Add country-to-continent mapping
- Add continent pool.ntp.org zones as first fallback,
this will improve time service for countries that don't have a zone
- Don't start threads in constructors
- Fix logging, better prevention of initialization loops
- Log severe errors to wrapper log also
continent.txt file from http://dev.maxmind.com/geoip/legacy/codes/country_continent/
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http://dev.maxmind.com/geoip/legacy/geolite/
Terms already met in LICENSE.txt