Add changelog section for 2016.0-beta-1.

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

protocol/protocol.tex

@@ -1966,6 +1966,29 @@ of $\PRFaddr{}$ was found by Daira Hopwood.
 
 \nsection{Change history}
 
+\subparagraph{2016.0-beta-1}
+
+\begin{itemize}
+    \item Major reorganisation to separate the abstract cryptographic protocol
+          from the algorithm instantiations.
+    \item Switch the \joinSplitSignature scheme to Ed25519, with consequent
+          changes to the computation of $\hSig$.
+    \item Fix the lead bytes in \paymentAddress and \spendingKey encodings to
+          match the implemented protocol.
+    \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'' blog post, and several crypto papers for security definitions.
+    \item Add \joinSplitTransfers to the Concepts section.
+    \item Add a section on Coinbase Transactions.
+    \item Add type declarations for functions.
+    \item Add an acknowledgement for jl777.
+    \item Fix a \texttt{Makefile} compatibility problem with the escaping behaviour
+          of \texttt{echo}.
+    \item Make the date format in references more consistent.
+    \item Change main font to Quattrocento.
+\end{itemize}
+
 \subparagraph{2016.0-alpha-3}
 
 \begin{itemize}