Update changelog for version 0.6.0

CHANGELOG.md

@@ -1,4 +1,33 @@
 ## Changelog
+### 0.6.0
+
+* Supported Lua Versions now include Lua 5.2 and Lua 5.3. LuaJIT and Lua 5.1
+  remain supported as well.
+* Flag `use-pkgconfig` was added to allow discovery of library and include paths
+  via pkg-config. Setting a specific Lua version flag now implies `system-lua`.
+  (Sean Proctor)
+* The module was renamed from `Scripting.Lua` to `Foreign.Lua`. The code is now
+  split over multiple sub-modules. Files processed with hsc2hs are restricted to
+  Foreign.Lua.Api.
+* A `Lua` monad (reader monad over LuaState) is introduced. Functions which took
+  a LuaState as their first argument are changed into monadic functions within
+  that monad.
+* Error handling has been redesigned completely. A new LuaException was
+  introduced and is thrown in unexpected situations. Errors in lua which are
+  leading to a `longjmp` are now caught with the help of additional C wrapper
+  functions. Those no longer lead to uncontrolled program termination but are
+  converted into a LuaException.
+* `peek` no longer returns `Maybe a` but just `a`. A LuaException is thrown if
+  an error occurs (i.e. in situtations where Nothing would have been returned
+  previously).
+* The `StackValue` typeclass has been split into `FromLuaStack` and
+  `ToLuaStack`. Instances not satisfying the law `x == push x *> peek (-1)` have
+  been dropped.
+* Documentation of API functions was improved. Most docstrings have been copied
+  from the official Lua manual, enriched with proper markup and links, and
+  changed to properly describe hslua specifics when necessary.
+* Example programs have been moved to a separate repository.
+* Unused files were removed. (Sean Proctor)
 
 ### 0.5.0