check for NaN and infinite values in arguments
remove debugging statements
remove usages of eval() since Stan does not use Eigen's expression templates
replace use of boost::math::tools::promote_args with stan::prob::return_type
added function signatures for gaussian_dlm without m0 and C0

If m0 and C0 are missing, then diffuse priors are used for the latent states
add minipage to fitem so that function args can have multiple lines
Update manual to conform to new bin/print arguments and format
Merge pull request #120 from stan-dev/feature/bugs-shapes

Feature/bugs shapes
Merge pull request #103 from stan-dev/feature/add_rayleigh_distr

Feature/add rayleigh distr
merging stan_csv_reader.hpp
updating valued_argument, singleton_argument
updating mcmc_writer_test
updating unvalued_argument
adding singleton_argument tests, test-unit runs now
updating .gitignore
Merge branch 'develop' of https://github.com/stan-dev/stan into develop
updating help print to indicate which arguments need values
renamed gaussian_dlm_log to gaussian_dlm_obs_log
reworking test/models/command
compressing help option