Aggregator constructs wrong IPv6 netmask for last octet

[neufeind]

Code in https://github.com/CIDRAM/CIDRAM/tree/v3/vault/CIDRAM/CIDRAM/Aggregator.php in constructTables() creates wrong netmasks for the last octet.

Netmasks are fine for:
["ffff:ffff:ffff:ffff:ffff:ffff:ffff::"]=>
int(112)
["ffff:ffff:ffff:ffff:ffff:ffff:fffe::"]=>
int(111)
["ffff:ffff:ffff:ffff:ffff:ffff:fffc::"]=>
and then wrong for the last octet:
["ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff:0"]=>
int(128)
["ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffe:0"]=>
int(127)
["ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffc:0"]=>
int(126)
["ffff:ffff:ffff:ffff:ffff:ffff:ffff:fff8:0"]=>
int(125)
["ffff:ffff:ffff:ffff:ffff:ffff:ffff:fff0:0"]=>
int(124)
["ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffe0:0"]=>
int(123)
["ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffc0:0"]=>
int(122)
["ffff:ffff:ffff:ffff:ffff:ffff:ffff:ff80:0"]=>
int(121)
["ffff:ffff:ffff:ffff:ffff:ffff:ffff:ff00:0"]=>
int(120)
["ffff:ffff:ffff:ffff:ffff:ffff:ffff:fe00:0"]=>
int(119)
["ffff:ffff:ffff:ffff:ffff:ffff:ffff:fc00:0"]=>
int(118)
["ffff:ffff:ffff:ffff:ffff:ffff:ffff:f800:0"]=>
int(117)
["ffff:ffff:ffff:ffff:ffff:ffff:ffff:f000:0"]=>
int(116)
["ffff:ffff:ffff:ffff:ffff:ffff:ffff:e000:0"]=>
int(115)
["ffff:ffff:ffff:ffff:ffff:ffff:ffff:c000:0"]=>
int(114)
["ffff:ffff:ffff:ffff:ffff:ffff:ffff:8000:0"]=>
int(113)

The :0 is too much there if we fully iterate through the last octet as well.

Fix is to append only an empty string, not :0, for the last octet:
$End = ($Octet === 8) ? '' : '::';