Added support for binary files and -M notation.

doc/api/index.html

@@ -69,7 +69,7 @@ With no FILE, or when FILE is -, read standard input.
   -T, --show-tabs                display TAB characters as ^I
   -s, --squeeze-blank            suppress repeated empty output lines
       --version                  output version information and exit
-  -v, --show-nonprinting         use ^ and U+ notation, except for LFD and TAB
+  -v, --show-nonprinting         use ^ and M- notation, except for LFD and TAB
 
 Examples:
   dcat f - g  Output f's contents, then standard input, then g's contents.
@@ -111,11 +111,6 @@ if (result.exitCode == exitSuccess) {
   }
 }
 </code></pre>
-<h2 id="differences-from-gnu-cathttpswwwgnuorgsoftwarecoreutilsmanualhtml_nodecat-invocationhtmlcat-invocation">Differences from <a href="https://www.gnu.org/software/coreutils/manual/html_node/cat-invocation.html#cat-invocation">GNU cat</a></h2>
-<ul>
-<li>No binary file support.</li>
-<li>The <a href="https://en.wikipedia.org/wiki/Unicode">U+</a> notation is used instead of <code>M-</code> for non-printing characters.</li>
-</ul>
 </section>