<li>Stack shuffles are compiled more efficiently.</li>
<li>Pushing literals on either side of a stack shuffle is now compiled more efficiently.</li>
<li>Fixed a problem with relocation of compiled code on PowerPC.</li>
+<li>Fixed various FFI issues on Mac OS X.</li>
</ul>
</li>
<li>User interface:
<ul>
-
+<li>Graphics rendering is now done using OpenGL and text rendering is done via FreeType. SDL_gfx and SDL_ttf libraries are no longer required.</li>
<li>Added expandable outliners. Used by the inspector, <code>.s</code>, <code>usage.</code>, <code>uses.</code>, <code>vocabs.</code>, and various other words.</li>
<li>Added word completion to the listener pane; press <code>TAB</code>.</li>
<li>Added word navigation shortcuts to the listener pane; press <code>C+LEFT</code> and <code>C+RIGHT</code> to move a word at a time, and <code>C+BACKSPACE</code> and <code>C+DELETE</code> to delete the previous and next word, respectively.</li>
<li>Everything else:
<ul>
-<li>Quaternions added to math library.
-
-Quaternions are represented as pairs of real numbers. Literal syntax is <code>Q{ a b c d }Q</code>, where <code>a</code>, <code>b</code>, <code>c</code> and <code>d</code> are real numbers.
-
-Many quaternion operations can be done using Factor's existing vector algebra words; this follows from the mathematical fact that the quaternions are a 2-dimensional vector space over the complex numbers:
-<ul>
-<li>Addition: <code>v+</code></li>
-<li>Subtraction: <code>v-</code></li>
-<li>Negation: <code>vneg</code></li>
-<li>Norm: <code>norm</code></li>
-<li>Multiplication by a complex number on the left: <code>n*v</code></li>
-</ul>
-A few new words are also needed:
-<ul>
-<li>Convert complex number to quaternion: <code>c>n</code></li>
-<li>Multiply by a complex number on the right: <code>q*n</code></li>
-<li>Quaternion multiplication: <code>q*</code></li>
-<li>Quaternion division: <code>q/</code></li>
-<li>Quaternion conjugate: <code>qconjugate</code></li>
-</ul>
-
-</li>
+<li>On Mac OS X, signal 11 errors caused by stack under/overflow no longer trigger the
+OS X crash reporter dialog.</li>
<li>Easier exception handling. The <code>cleanup ( try cleanup -- )</code> word encapsulates the following idiom:
<pre>
[ A ] [ B rethrow ] catch
<li>Intel 8080 CPU and Space Invaders emulator in <code>contrib/space-invaders</code> (Chris Double)</li>
<li>AOL Instant Messenger chat client library in <code>contrib/aim</code> (Doug Coleman)</li>
-<li>Cairo graphics library binding in <code>contrib/cairo</code> (Sampo Vuori)</li>
+<li>Cairo graphics library binding in <code>contrib/cairo</code>. (Sampo Vuori)</li>
+<li>New <code>contrib/math/</code> library with quaternions, matrices, polynomials, and various
+advanced mathematical functions. (Doug Coleman)</li>
+</ul>
+
+</li>
</ul>
</li>