upgrade to GPL 3

Author: kingaa

.Rbuildignore

@@ -2,7 +2,7 @@ tests/Makefile
 tests/(.+?)\.png$
 tests/(.+?)\.pdf$
 tests/(.+?)\.Rout$
-LICENSE\.txt$
+LICENSE\.md$
 README\.md$
 TODO\.md$
 ^\.gitignore$

DESCRIPTION

@@ -1,7 +1,7 @@
 Package: pomp
 Type: Package
 Title: Statistical Inference for Partially Observed Markov Processes
-Version: 1.13.1.2
+Version: 1.13.2.1
 Date: 2017-07-19
 Authors@R: c(person(given=c("Aaron","A."),family="King",
 		role=c("aut","cre"),email="kingaa@umich.edu"),
@@ -24,7 +24,7 @@ Depends: R(>= 3.1.2), methods
 Imports: stats, graphics, digest, mvtnorm, deSolve, coda, subplex, nloptr
 Suggests: magrittr, plyr, reshape2, ggplot2, knitr
 SystemRequirements: For Windows users, Rtools (see http://cran.r-project.org/bin/windows/Rtools/).
-License: GPL(>= 2)
+License: GPL(>= 3)
 LazyData: true
 Contact: kingaa at umich dot edu
 BugReports: http://github.com/kingaa/pomp/issues

LICENSE.md

@@ -1,5 +1,9 @@
 _N_e_w_s _f_o_r _p_a_c_k_a_g_e '_p_o_m_p'
 
+_C_h_a_n_g_e_s _i_n '_p_o_m_p' _v_e_r_s_i_o_n _1._1_3._2:
+
+        • Upgrade license to GPL version 3.
+
 _C_h_a_n_g_e_s _i_n '_p_o_m_p' _v_e_r_s_i_o_n _1._1_3._1:
 
         • Fix buffer-flow problem identified by ‘valgrind’.

LICENSE.txt

@@ -1,5 +1,10 @@
 \name{NEWS}
 \title{News for package `pomp'}
+\section{Changes in \pkg{pomp} version 1.13.2}{
+  \itemize{
+    \item Upgrade license to GPL version 3.
+  }
+}
 \section{Changes in \pkg{pomp} version 1.13.1}{
   \itemize{
     \item Fix buffer-flow problem identified by \code{valgrind}.