1.15

• Calls to die() where replaced with calls to trigger_error(). This
  allows these (rare) errors to be gracefully handled by an error handler.
  Pull request by Dirk Weise. GitHub #28.
• Removed broken distributed queries code.
• Previously if a time zone was not found, an undefined variable error would
  be outputted. get_time_zone now returns null if there is no matching
  time zone. (Fixed by justgoodman. GitHub #30.)
• $GEOIP_REGION_NAME is now prefixed with global to make it autoloaded by
  Composer. Pull request by Laurent Goussard. GitHub #15.
• The script from updating the timezone data was improved to work with the
  new CSV format. Pull request by Shadman Kolahzary. GitHub #19.