Changes since 4.0.0
* Dropped boost in favor of C++11
* Separated out stdlib to make more options for compile time improvements

Changes since 3.1.0
* svenstaro: Unused variables and CMake consistency fixes
* Added support for returning pointers from functions (#13)
* Compile with -pedantic (#9)
* Fix issues with multiple ChaiScript object types having the same attribute name (#15)
* Prevent variable redeclaration in same scope (#22)
* mgee: Boxed_Number improvements (#27)
* Support switch statements (#34)
* Fix uint16 comparions (#26)
* Add ability to add const_var globals in Module objects (#14)
* Add support for ternary operators ?:
* Add headers to CMakeLists so they show up in IDEs
* Add ability to get vector of defined objects and vector of defined functions
* Fix memory leak in cyclical references
* Clean up static analysis issues discovered
* Fix vector construction to be consistent with map construction
* Increased unit tests to 161
* Performance enhancements

Changes since 3.0.0
* Numeric operations performance increased approximately 10x
* Looping operations performance increased up to 2x
* Engine start up time decreased
* Several parsing bugs related to index operators fixed
* Added full support for all C algebraic types: double, long double, float, int, long, char,
  uint8_t, uint16_t, uint32_t, uint64_t, int8_t, int16_t, int32_t, int64_t
* Enhanced support for capturing of exceptions thrown from ChaiScript in C++

Changes since 2.3.3

* Code simplifications
* Fully integrate documentation with source code in doxygen style comments
* Unit tests increased from 114 to 137
* Automatic conversion between boost::function objects and ChaiScript functions 
* Many bug fixes
* Minor performance improvements
* Namespace reorganization to make end user code more accessible
* clang support
* VisualStudio 2010 Support
* Support for C++ base classes and automatic upcasting 
* Remove __ reserved identifiers
* Better code organization to reduce #ifdefs 
* clanmills: command line options for chai eval
* clanmills: parser cleanups and code reduction
* Function introspection and reflection 
* Correct function dispatch order to account for base classes and provide a defined order of dispatch 
* Predictable object lifetime that emulates C++ stack lifetime
* emarcotte: pkgconfig support
* standardize on method/member naming and indentation
* 64bit Visual Studio support
* Better support for const objects
* Drastic reduction of runtime exceptions - making debug builds orders of magnitude faster
* Support for platforms with no loadable module support
* Add helper macro for registering class