Add support for K2DTMC stochastic process + steady states

[coveralls]

Pull Request Test Coverage Report for Build 2649433979

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 40.292%

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Totals
Change from base Build 2647969435:	0.0%
Covered Lines:	5844
Relevant Lines:	14504

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💛 - Coveralls