Update CHANGELOG

Author: josevalim

CHANGELOG.md

@@ -10,8 +10,41 @@
 
 ### 1. Enhancements
 
+#### EEx
+
+  * [EEx] Support splitting middle expressions across EEx clauses
+
+#### Elixir
+
+  * [Code] Add support for the `:erlc_options` compiler option
+  * [Kernel] Warn on binary patterns with segments that are not byte-aligned
+  * [Keyword] Optimize `Keyword.pop/3`, `Keyword.pop!/2`, and `Keyword.pop_lazy/3`
+  * [MapSet] Optimize `MapSet.symmetric_difference/2` when set sizes differ
+  * [Registry] Optimize exact key matching in lookups
+  * [String] Optimize `String.bag_distance/2`
+  * [URI] Optimize percent-decoding and `URI.to_string/1`
+
+#### ExUnit
+
+  * [ExUnit.Assertions] Add `trace/3` helper
+
 ### 2. Bug fixes
 
+#### Elixir
+
+  * [Kernel] Fix expansion of rebound variables in bitstring size expressions
+  * [Kernel] Fix variables defined in one default argument leaking into subsequent default arguments
+  * [Kernel.Typespec] Preserve metadata when proxying to Elixir typespecs
+
+#### ExUnit
+
+  * [ExUnit.CaptureLog] Fix the typespec for capture log options
+
+#### Mix
+
+  * [Mix.SCM.Git] Raise if Git refspecs start with `-`
+  * [mix deps.compile] Preserve code paths and compiler options across OS partitions
+
 ### 3. Hard deprecations
 
 #### Elixir