Multiple code cleanup

This release offers multiple code cleanup/improvement.

No real speed improvement, (yet), but it is needed to prepare for the missing functions from the C++ project.

Added more advanced function

Added some functions from the C++ bignumber project

• Root
• Sqrt
• Exp
• Ln
• Pow

Updated composer release.

This release it to bring the composer up to date.

Initial release

Made small changes to speed up the div/mult

Still not 100% happy with it, but it is better now.