chikkarpy has no attribute 'dictionarylib' in certain cases

[Nishihara-Daiki]

case 1: raised ERROR if call chikkarpy.dictionarylib

$ pip install chikkarpy
$ python
>>> import chikkarpy
>>> chikkarpy.dictionarylib
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: module 'chikkarpy' has no attribute 'dictionarylib'

case 2: pass if use from chikkarpy import dictionarylib

$ pip install chikkarpy
$ python
>>> from chikkarpy import dictionarylib
>>> dictionarylib
<module 'chikkarpy.dictionarylib' from '/usr/local/lib/python3.7/dist-packages/chikkarpy/dictionarylib/__init__.py'>

case 3: pass if call chikkarpy.dictionarylib AFTER from chikkarpy import dictionarylib

$ pip install chikkarpy
$ python
>>> import chikkarpy
>>> from chikkarpy import dictionarylib
>>> chikkarpy.dictionarylib
<module 'chikkarpy.dictionarylib' from '/usr/local/lib/python3.7/dist-packages/chikkarpy/dictionarylib/__init__.py'>