goldfirere/units — pull request #28 by nushio3 (2014-07-06 07:20:07+00:00)
Title: Enhancement of unit TH: ability to parse dimensionless units.

I'd like our unit TH to be able to parse dimensionless units.
And I think dimensionless unit should allow spaces like `[si| |]` , since the behavior is consistent with allowing extra spaces among unit symbol and numbers.