merge
merge solver-api-consolidation
code cleanup and isolation of private/public functions
docstrings updates
added encoding
updated stochastic docstrings
fixed minor docstring formatting issues
more docstring updates for stochastic module
code cleanup and expanded docstrings
rename sepdpsolve to ssepdpsolve. docstring updates
docstring fixes
completed rename sepdp -> ssepdp
restore steady for increased backwards compatibility
restore old liouvillian implementation under the name liouvillian_ref and reinstate the unit test comparing reference and optimized version if liouvillian
fix identation error
merged and resolved conflicts
pep8 fixes
Merge pull request #172 from jrjohansson/stochastic-doc

Stochastic doc
Merge pull request #173 from jrjohansson/restore-steady-liouvillian-unit-test

Restore steady and liouvillian unit test
Merge pull request #179 from anubhavvardhan/quantum_circuit

Updating qubits.py