v2.13.1 (3 December 2016)

Bug Fixes

• fixed compound declare and define (#2156, #2153, #2146)

v2.13.0 (25 November 2016)

New Team Members

• Thel Seraphim (Columbia University) -- Stan and Math libraries
• Vincent Picaud (CEA, France) -- MathematicaStan

Bug Fixes

• generated code for lower truncation fixed for discrete variables (#2054)
• typo in error messages for RNGs only allowed in transformed data
  block (#2124)
• variables ending in _lpdf are now allowed (#2123)
• cov_exp_quad() not compiling in C++ (#2113)
• conditional operator in functions not compiling in C++ (#2101)
• off-by-one error in error message for integrate_ode_bdf() fixed (#2073)

New User-Facing Features

• vectorization of unary functions (#2119, #2037)
• bernoulli_logit_rng() added to language (#2084)
• Jacobian warning now suggests target += (#2066)
• matrix_exp() function now available (#2043)
• compound declaration / definition statements (#1951)

New Internal Features

• user-defined functions can be declared and not defined (#2068)

Documentation

• manual reorganization (#1599)
• line too long (#2121)
• added integer % operator documentation (#2065)
• lots more (#2051)