Added generic step_size parameter to algorithm SetUp

[sfarrens]

• Added step_size parameter to SetUp class.
• Made conditional assignment for step size parameters in each algorithm.
• Added unit test using step_size parameter.

[coveralls]

Pull Request Test Coverage Report for Build 255

• 8 of 8 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.01%) to 94.033%

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Totals
Change from base Build 245:	0.01%
Covered Lines:	1891
Relevant Lines:	2011

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💛 - Coveralls

[sfarrens]

@chaithyagr @zaccharieramzi any comments on this before I merge?

[chaithyagr]

LGTM.
Just minor concern is that you may need to mention which takes precedence if both are specified, in this case it is step_size.
But as I say, it is Minor

[sfarrens]

LGTM.
Just minor concern is that you may need to mention which takes precedence if both are specified, in this case it is step_size.
But as I say, it is Minor

Good point, it's always better to be explicit. I will add something to the API documentation to make this clear.