informationsea/Hyokai — pull request #6 by east301 (2013-11-09 05:18:56+00:00)
Title: improves field type suggestion

The previous version of Hyokai can not correctly suggest field type of columns
which contain negative integers or real values represented by exponent notation (e.g. -1, 12e3, etc.).
They were suggested as string type.
This change fixes the above issue.