Update the change history.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>

protocol/protocol.tex

@@ -2704,7 +2704,7 @@ of $\PRFaddr{}$ was found by Daira Hopwood.
           from the algorithm instantiations.
     \item Add a section specifying the zero-knowledge proving system and the
           encoding of proofs. Change the encoding of points in proofs to follow
-          IEEE Std 1363.
+          IEEE Std 1363[a].
     \item Add a section on consensus changes from \Bitcoin, and the specification
           of Equihash.
     \item Complete the ``Differences from the \Zerocash paper'' section.
@@ -2713,11 +2713,12 @@ of $\PRFaddr{}$ was found by Daira Hopwood.
           changes to the computation of $\hSig$.
     \item Fix the lead bytes in \paymentAddress and \spendingKey encodings to
           match the implemented protocol.
+    \item Add a consensus rule about the ranges of $\vpubOld$ and $\vpubNew$.
     \item Clarify cryptographic security requirements and added definitions
           relating to the in-band secret distribution.
     \item Add various citations: the ``Fixing Vulnerabilities in the Zcash
-          Protocol'' and ``Why Equihash?'' blog posts, and several crypto papers
-          for security definitions.
+          Protocol'' and ``Why Equihash?'' blog posts, several crypto papers
+          for security definitions, and the \Bitcoin whitepaper.
     \item Reference the extended version of the \Zerocash paper rather than the
           Oakland proceedings version.
     \item Add \joinSplitTransfers to the Concepts section.
@@ -2727,6 +2728,8 @@ of $\PRFaddr{}$ was found by Daira Hopwood.
           Ben Blaxill, and Alex Balducci.
     \item Fix a \texttt{Makefile} compatibility problem with the escaping behaviour
           of \texttt{echo}.
+    \item Switch to \texttt{biber} for the bibliography generation, and add
+          backreferences.
     \item Make the date format in references more consistent.
     \item Change main font to Quattrocento.
 \end{itemize}