Update CHANGELOG

Author: José Valim

CHANGELOG.md

@@ -1,22 +1,26 @@
 * enhancements
   * [CLI] `--debug-info` is now true by default
   * [ExUnit] Make ExUnit exit happen in two steps allowing developers to add custom `at_exit` hooks
-  * [Macro] Improvements to `Macro.to_binary`
-  * [Mix] Mix now prints information as they come when executing git commands and compiling projects
+  * [IEx] Many improvements to helpers functions `h/1`, `s/1` and others
   * [Kernel] Functions defined with `fn` can now handle many clauses
   * [Kernel] Raise an error if clauses with different arities are defined in the same function
   * [Kernel] `function` macro now accepts arguments in `M.f/a` format
+  * [Macro] Improvements to `Macro.to_binary`
+  * [Mix] Mix now prints information as they come when executing git commands and compiling projects
+  * [Mix] Mix now validates the given defined application
+  * [Record] Records are now optimized and can be up to 6x faster in some situations
   * [String] Support `\xXX` and `\x{HEX}` escape sequences in strings, char lists and regexes
 
 * bug fix
   * [Bootstrap] Compiling Elixir source no longer fails if environment variables contain utf-8 entries
+  * [IEx] IEx now waits all command line options are processed to start
   * [Kernel] Ensure proper stacktraces when showing deprecations
 
 * deprecations
   * [Enum] `Enum.qsort` is deprecated and `List.sort` in favor of `Enum.sort`
   * [ExUnit] `assert left in right` is deprecated in favor of `assert left inlist right`
   * [Record] Record default-based generated functions are deprecated
-  * [Typespec] Enhacements and deprecations to the `@spec/@callback` syntax
+  * [Typespec] Enhancements and deprecations to the `@spec/@callback` syntax
 
 # v0.7.1 (2012-11-18)