Update version strings

src/Info.plist

-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist SYSTEM "file://localhost/System/Library/DTDs/PropertyList.dtd">
-<plist version="0.9">
-<dict>
-	<key>CFBundleIconFile</key>
-	<string>logo.icns</string>
-	<key>CFBundlePackageType</key>
-	<string>APPL</string>
-	<key>CFBundleGetInfoString</key>
-	<string>Typica 1.6.1</string>
-	<key>CFBundleSignature</key>
-	<string>????</string>
-	<key>CFBundleExecutable</key>
-	<string>Typica</string>
-	<key>CFBundleIdentifier</key>
-	<string>com.wilsonscoffee.Typica</string>
-	<key>CFBundleDisplayName</key>
-	<string>Typica</string>
-	<key>CFBundleShortVersionString</key>
-	<string>1.6.1</string>
-	<key>CFBundleVersion</key>
-	<string>1.6.1</string>
-	<key>NSHumanReadableCopyright</key>
-	<string>© 2007–2013 Neal Wilson</string>
-</dict>
-</plist>

src/resources/Info.plist

 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleGetInfoString</key>
-	<string>Typica 1.6.3</string>
+	<string>Typica 1.6.4</string>
 	<key>CFBundleSignature</key>
 	<string>@TYPEINFO@</string>
 	<key>CFBundleExecutable</key>
 	<key>CFBundleDisplayName</key>
 	<string>Typica</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.6.3</string>
+	<string>1.6.4</string>
 	<key>CFBundleVersion</key>
-	<string>1.6.3</string>
+	<string>1.6.4</string>
 	<key>NSHumanReadableCopyright</key>
 	<string>© 2007–2015 Neal Wilson</string>
 </dict>

src/resources/html/about.html

 				<div id="topbanner">
 					<a href="http://www.randomfield.com/programs/typica/"><img src="../icons/appicons/logo96.png" height="96px" width="96px" alt="Typica logo" /></a>
 					<h1><a href="http://www.randomfield.com/programs/typica/">Typica</a></h1>
-					<h2>Version 1.6.3</h2>
+					<h2>Version 1.6.4</h2>
 				</div>
 			<div id="maintext">
 				<p>Copyright &copy; 2007&ndash;2015 Neal Evan Wilson

src/typica.rc

 #include <winver.h>
 VS_VERSION_INFO	VERSIONINFO
-FILEVERSION 	1,6,3,0
-PRODUCTVERSION 	1,6,3,0
+FILEVERSION 	1,6,4,0
+PRODUCTVERSION 	1,6,4,0
 FILEFLAGSMASK	0x3fL
 #ifdef _DEBUG
 	FILEFLAGS	VS_FF_DEBUG
 		BLOCK "040904b0"
 		BEGIN
 			VALUE "CompanyName", "Wilson's Coffee & Tea\0"
-			VALUE "FileDescription", "Typica 1.6.3\0"
-			VALUE "FileVersion", "1.6.3\0"
+			VALUE "FileDescription", "Typica 1.6.4\0"
+			VALUE "FileVersion", "1.6.4\0"
 			VALUE "InternalName", "Typica\0"
 			VALUE "LegalCopyright", "Copyright 2007-2015 Neal Evan Wilson\0"
 			VALUE "OriginalFilename", "Typica.exe\0"
 			VALUE "ProductName", "Typica\0"
-			VALUE "ProductVersion", "1.6.3\0"
+			VALUE "ProductVersion", "1.6.4\0"
 		END
 	END
 	BLOCK "VarFileInfo"

src/typica.w

 \mark{\noexpand\nullsec0{A Note on Notation}}
 \def\pn{Typica}
 \def\filebase{typica}
-\def\version{1.6.3 \number\year-\number\month-\number\day}
+\def\version{1.6.4 \number\year-\number\month-\number\day}
 \def\years{2007--2015}
 \def\title{\pn{} (Version \version)}
 \newskip\dangerskipb