Update CHANGELOG

Author: José Valim

CHANGELOG.md

@@ -41,10 +41,12 @@
   * [Enum] `Enum.join/2` and `Enum.map_join/3` with a char list are deprecated
   * [IO] `IO.stream(device)` and `IO.binstream(device)` are deprecated in favor of `IO.stream(device, :line)` and `IO.binstream(device, :line)`
   * [Kernel] `list_to_binary/1`, `binary_to_list/1` and `binary_to_list/3` are deprecated in favor of `String.from_char_list!/1` and `String.to_char_list!/1` for characters and `:binary.list_to_bin/1`, `:binary.bin_to_list/1` and `:binary.bin_to_list/3` for bytes
+  * [Kernel] `to_binary/1` is deprecated in favor of `to_string/1`
   * [Macro] `Macro.unescape_binary/1` and `Macro.unescape_binary/2` are deprecated in favor of `Macro.unescape_string/1` and `Macro.unescape_string/2`
   * [Mix] `:umbrella` option for umbrella paths has been deprecated in favor of `:in_umbrella`
 
 * backwards incompatible changes
+  * [Kernel] `Binary.Chars` was renamed to `String.Chars`
   * [Kernel] The previous ambiguous import syntax `import :functions, Foo` was removed in favor of `import Foo, only: :functions`
   * [OptionParser] `parse` and `parse_head` now returns a tuple with three elements instead of two