setup error codes, flag to return error code on IP change
setup error codes, flag to return error code on IP change

0/-1 standard for normal/error.  Use 1 for an IP change but only if they
want it it.  Again, good for scripting and/or cron

bensquire/Digital-Ocean-Dynamic-DNS-Updater,bensquire/Digital-Ocean-Dynamic-DNS-Updater