diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 00000000..0b35ee2f
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,44 @@
+## Version 0.2
+
+This release took a long time, so here are just the most important changes.
+
+* Added `downcast()` utility function
+* Fixed GCC 4.8 and clang support
+* Improved documentation
+* Improved CMake and added Conan support
+* Hashing support for `boolean`, `integer`, `floating_point` and `strong_typedef`
+
+## Vocabulary Types
+
+* Added `object_ref<T>` and and `xvalue_ref<T>`
+* Added `array_ref<T>`
+* Added `function_ref<T>`
+* Added `flag_set<T>`
+* Breaking: renamed `distance_t` to `difference_t`
+* Improved `index_t` and `difference_t`
+
+### Optional & Variant:
+
+* Breaking: `optional` now auto-unwraps, removed `unwrap()` function
+* Breaking: `optional_ref` creation function now `opt_ref()` instead of `ref()`, but more than before
+* Breaking: Removed `optional_ref<T>::value_or()`
+* Added `optional_for<T>` utility typedef
+* Added support for additional parameters to `with()` and make it more optimizer friendly
+* Added `with()` for `tagged_union`
+* Improved map functions: additional arguments, member function pointers, `void` returning function objects
+* Bugfix for trivial variant copy/move/destroy
+
+### Type Safe Building Blocks:
+
+* Added pointer like access to `constrained_type`
+* Added `constrained_ref`
+* Added `throwing_verifier` for `constrained_ref` along with `sanitize()` helper functions
+* Added literal operator to create a static bound of `bounded_type`
+* Added bitwise operators for `strong_typedef`
+* Added `constexpr` support to `strong_typedef`
+* Added support for mixed operators in `strong_typedef`
+* Made `constrained_type` `constexpr`
+* Fixed strong typedef `get()` for rvalues
+
+
+Thanks to @johelgp, @xtofl, @nicola-gigante, @BRevzin, @verri, @lisongmin, @Manu343726, @MandarJKulkarni, @gerboengels.
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1eec2891..9c6b4767 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -52,6 +52,7 @@ set(detail_header_files
     ${CMAKE_CURRENT_SOURCE_DIR}/include/type_safe/detail/copy_move_control.hpp
     ${CMAKE_CURRENT_SOURCE_DIR}/include/type_safe/detail/force_inline.hpp
     ${CMAKE_CURRENT_SOURCE_DIR}/include/type_safe/detail/is_nothrow_swappable.hpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/include/type_safe/detail/map_invoke.hpp
     ${CMAKE_CURRENT_SOURCE_DIR}/include/type_safe/detail/variant_impl.hpp)
 set(header_files
     ${CMAKE_CURRENT_SOURCE_DIR}/include/type_safe/config.hpp
diff --git a/conanfile.py b/conanfile.py
index 1a2af334..cb849e21 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -5,7 +5,7 @@
 class TypeSafe(ConanFile):
     name = 'type_safe'
     url  = 'https://github.com/foonathan/type_safe'
-    version = '0.1'
+    version = '0.2'
     requires = 'debug_assert/1.3@Manu343726/testing'
     exports = '*.hpp'
     generators = 'cmake'
diff --git a/external/debug_assert b/external/debug_assert
index cdd21e8b..dfeca6bb 160000
--- a/external/debug_assert
+++ b/external/debug_assert
@@ -1 +1 @@
-Subproject commit cdd21e8be0d2b7794e41fdd87400cd497615a92d
+Subproject commit dfeca6bbd685c2036a1682e975cbcec041d397c4