v2.7.0 (9 July 2015)

New Team Members

Line numbers reported for runtime errors (#1195)
Wiener first passage time density (#765) (thanks to
Michael Schvartsman)
Partial initialization (#1069)
NegBinomial2 RNG (#1471) and PoissonLog RNG (#1458) and extended
range for Dirichlet RNG (#1474) and fixed Poisson RNG for older
Mac compilers (#1472)
Error messages now use operator notation (#1401)
More specific error messages for illegal assignments (#1100)
More specific error messages for illegal sampling statement
signatures (#1425)
Extended range on ibeta derivatives with wide impact on CDFs (#1426)
Display initialization error messages (#1403)
Works with Intel compilers and GCC 4.4 (#1506, #1514, #1519)

Allow functions ending in _lp to call functions ending in _lp (#1500)
Update warnings to catch uses of illegal sampling functions like
CDFs and updated declared signatures (#1152)
Disallow constraints on local variables (#1295)
Allow min() and max() in variable declaration bounds and remove
unnecessary use of math.h and top-level :: namespace (#1436)
Updated exponential lower bound check (#1179)
Extended sum to work with zero size arrays (#1443)
Positive definiteness checks fixed (were > 1e-8, now > 0) (#1386)

New static constants (#469, #765)
Added major/minor/patch versions as properties (#1383)
Pulled all math-like functionality into stan::math namespace
Pulled the Stan Math Library out into its own repository (#1520)
Included in Stan C++ repository as submodule
Removed final usage of std::cout and std::cerr (#699) and
updated tests for null streams (#1239)
Removed over 1000 CppLint warnings
Remove model write CSV methods (#445)
Reduced generality of operators in fvar (#1198)
Removed folder-level includes due to order issues (part of Math
reorg) and include math.hpp include (#1438)
Updated to Boost 1.58 (#1457)
Travis continuous integration for Linux (#607)
Add grad() method to math::var for autodiff to encapsulate math::vari
Added finite diff functionals for testing (#1271)
More configurable distribution unit tests (#1268)
Clean up directory-level includes (#1511)
Removed all lint from new math lib and add cpplint to build lib
(#1412)
Split out derivative functionals (#1389)

New Logo in Manual; remove old logos (#1023)
Corrected all known bug reports and typos; details in
issues #1420, #1508, #1496
Thanks to Sunil Nandihalli, Andy Choi, Sebastian Weber,
Heraa Hu, @jonathan-g (GitHub handle), M. B. Joseph, Damjan
Vukcevic, @tosh1ki (GitHub handle), Juan S. Casallas
Fix some parsing issues for index (#1498)
Added chapter on variational inference
Added strangely unrelated regressions and multivariate probit
examples
Discussion from Ben Goodrich about reject() and sampling
Start to reorganize code with fast examples first, then
explanations
Added CONTRIBUTING.md file (#1408)

Note: If downloading source, use the green links to download a copy that includes the Stan Math Library.