Update CHANGELOG

CHANGELOG

@@ -1,3 +1,34 @@
+0.6 (????-??-??)
+----------------
+
+Big Changes:
+
+* Rewrote the command-line mode to be based on Node.js instead of Rhino -- no
+  more Java dependency. This also means that PEG.js is available as a Node.js
+  package and can be required as a module.
+* Version for the browser is built separately from the command-ine one in two
+  flavors (normal and minified).
+* Parser variable name is no longer required argument of bin/pegjs -- it is
+  "module.exports" by default and can be set using the -e/--export-var option.
+  This makes parsers generated by /bin/pegjs Node.js modules by default.
+* Added ability to start parsing from any grammar rule.
+* Added several compiler optimizations -- 0.6 is ~12% faster than 0.5.1 in the
+  benchmark on V8.
+
+Small Changes:
+
+* Split the source code into multiple files combined together using a build
+  system.
+* Jake is now used instead of Rake for build scripts -- no more Ruby dependency.
+* Test suite can be run from the command-line.
+* Benchmark suite can be run from the command-line.
+* Benchmark browser runner improvements (users can specify number of runs,
+  benchmarks are run using |setTimeout|, table is centered and fixed-width).
+* Added PEG.js version to "Generated by..." line in generated parsers.
+* Added PEG.js version information and homepage header to peg.js.
+* Generated code improvements and fixes.
+* Internal code improvements and fixes.
+
 0.5.1 (2010-11-28)
 ------------------