bug#3179: Entering Chinese "zero": add U+3007

[積丹尼 Dan Jacobson]

>>>>> "ŠN" == Štěpán Němec <stepnem@gmail.com> writes:

ŠN> really don't see any reason to have it anywhere.

Actually to be fair, e.g., 7, ７, 七 should all be available on "qi1"
too.

And ling2 should get all of 0, ０ etc. that we were talking about.