Calculator 03

Completely inherits the basic functions of version 2.1 with a lot more interesting functions added.

Extra functions:

• The Science Calculator now supports exponentiation and more complex floating point such as scientific scientific notation.
• Optimized the Function Calculator to allow more free function storing and loading, you can now save all your functions and view all functions you have saved.
• A new matrix calculator added which supports basic functions like addition, subtraction, multiplication, transpose, determinant and eigen value.