Hello all,

Attached is my first patch to guix. It's for the package
`ibus-chewing`, an IBus front-end of Chewing, which is an intelligent
Chinese input method for Zhuyin (BoPoMoFo) users. A dependency `gob`
is also added. Hopefully, this will attract more Chinese users to
guix.

Special thanks for their patience and guides to nckx and
raghavgururajan on #guix. Most of the code work came from
raghavgururajan.

Regards,
Jin