Fixing Issue #53

[math-and-data]

Need int64 as default.
See #53

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[coveralls]

Pull Request Test Coverage Report for Build 92

• 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 61.221%

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Totals
Change from base Build 88:	0.0%
Covered Lines:	832
Relevant Lines:	1359

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💛 - Coveralls

[googlebot]

CLAs look good, thanks!

[math-and-data]

Great, I'm going to close this out (used uuids instead).

[ludwigschubert]

Jupp! Thanks for bringing it up, and sorry we couldn’t go with your PR—I feel UUIDs are a better match for guaranteeing unique names.

[math-and-data]

No problem - mine was really just a local quick fix. Yours is definitely the more elegant solution.