Duplicate entries in jyutping dictionary

[tshmak]

Hi, I found that some characters, e.g. 凹 has duplicate entry in the dictionary:

凹	凹	au3/nap1
凹	凹	waa1

leading to incomplete results when we try to obtain the jyutping for these characters:

jyutping.get('凹')
Out[22]: ['waa1']

[cmsflash]

Fixed in #2, if the maintainer has time to approve.

[cmsflash]

@imdreamrunner This issue is solved by #2 and can be closed.