Updated version resolving issues #3, #5, #6 & #10
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Review of Marcin's updates

One (very small) wording change in IANA Considerations
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Merge branch 'master' of https://github.com/msiodelski/ietf-dhc-relay-dhcp4-over-dhcp6

Conflicts:
	draft-ietf-dhc-dhcpv4-over-dhcpv6-04.xml