0.6.6 - minor update on log

[chfw]

With your PR, here is a check list:

• Has test cases written?
• Has all code lines tested?
• Has make format been run?
• Please update CHANGELOG.yml(not CHANGELOG.rst)
• Has fair amount of documentation if your change is complex
• Agree on NEW BSD License for your contribution

[codecov-commenter]

Codecov Report

Merging #113 (1caf894) into master (5275c1c) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #113   +/-   ##
=======================================
  Coverage   97.91%   97.91%           
=======================================
  Files          52       52           
  Lines        3361     3363    +2     
=======================================
+ Hits         3291     3293    +2     
  Misses         70       70           

Impacted Files	Coverage Δ
pyexcel_io/__init__.py	100.00% <ø> (ø)
pyexcel_io/_compact.py	72.72% <ø> (ø)
pyexcel_io/book.py	68.51% <ø> (ø)
pyexcel_io/constants.py	100.00% <ø> (ø)
pyexcel_io/database/__init__.py	100.00% <ø> (ø)
pyexcel_io/database/common.py	100.00% <ø> (ø)
pyexcel_io/database/exporters/django.py	100.00% <ø> (ø)
pyexcel_io/database/exporters/sqlalchemy.py	100.00% <ø> (ø)
pyexcel_io/database/querysets.py	95.45% <ø> (ø)
pyexcel_io/exceptions.py	100.00% <ø> (ø)
... and 14 more

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