Release v0.0.2

Implementation changes:

• lua.global is refactored to lua.set, lua.get and lua.setObject for userdata
• Added type unsigned long and unsigned long&
• Added userdata support for const, const & and const *
• Addded inheritance support for ClassPrototype
• Added descriptive error classes

Benchmark changes:

• Changed output (including nanoseconds/operation)
• Added global get/set operations

Release v0.0.1

Initial version