Ddclient 3.8.2 finally released

It's been a while and has been announced a while ago but here is new release of
ddclient. There are some important changes and some documentation is modified.
A detailed overview can be found in ChangeLog but here's a quick overview:

• adding support by ChangeIP - patch send by Michele Giorato
• sha-1 patch send by pirast to allow Digest::SHA
• allow reuse of use - patch send by Rodrigo Araujo
• preventing deep sleep - see [bugs:#46]
• Fallback to iproute if ifconfig doesn't work - patch send by Maccied Grela

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