new_from_integer does not work properly for IPv6 integer strings

[oschwald]

Net::Works::Address->new_from_integer(integer => '42540766416916187176308156905784606720') returns the address for 255.255.255.255 rather than 2001:db8:1234::

[autarch]

We discussed a few possible fixes in chat:

• Make the passed value a uint128() and then check if it's in the IPv4 or IPv6 range - we still need need to make sure it's a valid uint128 - the uint128() sub appears to return 0 on an invalid number, so we can check the uint128()'d number against the original string version for equality. If they're not equal it's not valid.
• Require an explicit version param

Either way, the current code's method of determining whether something is an IPv4 or IPv6 number is not very smart.

[oschwald]

@2shortplanks ran into a related problem with trying to pass in a Math::UInt128 integer for an IPv4 network, causing much confusion. Either of these solutions would also fix that issue.