v2.0.0

Change log

• Rewrote the entire library in PIMPL philosophy.
• Made the library a cyclic API and remove the use of mutex completely.
• Made the library single-threaded and non-blocking.
• Refactored and fixed a lot of buggy code.
• Fixed Memory leaks.
• New syntax and completely avoided returning *this on every void function.
• Made the library to use standard stuff instead of handwritten stuff.
• Made the code much more readable and maintainable.
• Removed childish code.