Fix bug related to culture on DecimalParameters

[Giorgi]

Can you merge develop branch into your fork? It has some changes necessary for running PR tests.

[Seddryck]

Close #90

[coveralls]

Pull Request Test Coverage Report for Build 4588448528

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 86.286%

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Totals
Change from base Build 4551579574:	0.0%
Covered Lines:	670
Relevant Lines:	771

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💛 - Coveralls