Initial commit.
Delete whitespace.
Break lines at 80 characters.
Added argument parsers
Argument parsers
Test argument parsers
Recursive arguments
Added many new arguments
New arguments, started refilling command.hpp
Implemented optimization algorithms and various samplers, added appropriate arguments
initial work
Merge branch 'develop' into feature/arg_refactor

Conflicts:
	src/stan/gm/command.hpp
Lots of bug fixes and behavior tweaks to accompany merge of develop
model compiles
Merge remote-tracking branch 'remotes/stan-dev/develop' into feature/dlm

Conflicts:
	src/stan/prob/distributions/multivariate/continuous.hpp
misc
working implementation
getting sequential version to work
update signatures
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