Update docs.

Change-Id: I69d50bcd37aed3bea2190ca614f023e83172901b
diff --git a/docs/changes.tex b/docs/changes.tex
index cd41fd3..343ffb8 100644
--- a/docs/changes.tex
+++ b/docs/changes.tex
@@ -14,6 +14,8 @@
   LDLT factorization on the normal equations.
 \item Cached symbolic factorization when using \texttt{CXSparse}.
   (Petter Strandark)
+\item New example \texttt{nist.cc} and data from the NIST non-linear
+  regression test suite. (Thanks to Douglas Bates for suggesting this.)
 \item The traditional Dogleg solver now uses an elliptical trust
   region (Markus Moll)
 \item Support for returning initial and final gradients \& Jacobians.
@@ -38,6 +40,10 @@
 
 \subsection{Bug Fixes}
 \begin{itemize}
+\item Fix how invalid step evaluations are handled.
+\item Change the slop handling around zero for model cost changes to use
+relative tolerances rather than absolute tolerances.
+\item Fix an inadvertant integer to bool conversion. (Petter Strandmark)
 \item Do not link to \texttt{libgomp} when building on
   windows. (Petter Strandmark)
 \item Include \texttt{gflags.h} in \texttt{test\_utils.cc}. (Petter