adapt epsilon including when it is specified with 0
rstan, add epsilon jitter
Use pointer to stream instead of reference to stream to allow for null streams
Added write_sampler_state for general implementation display
Don't clear vectors before appending param names and values
Added sample output method
Intermediate reworking of command to use mcmc_writer
Print diagnostic information
fixed columns and rows dot product in fvar/matrix
fixed determinant header
added more tests to fvar_matrix
added log_determinant to fvar/matrix with tests
added mdivide_left to fvar/matrix with tests
added mdivide_right to fvar/matrix with tests
Merge branch 'master' of https://github.com/stan-dev/stan
rstan, add option of delta and gamma
Added Welford estimation classes

Factored adaptation algorithms from wrapper

Removed deprecated tests, added new ones

Fixed typo in include paths

Upated adaptation algorithm tests

Type in test vector initialization

Added Welford estimator tests

Adaptation refactor
Merge branch 'master' of github.com:stan-dev/stan

Merge adaptation refactor
rstan: calculation of number of saved draws differently due to the merge of hmc_refactor
rstan, change due to 27aea6753d26789e57df2484d891ccc39fa1f065