Make ProcalParser independant from using RJM's BigDecimalMath package

[danvim]

The BigDecimalMath package has several disadvantages to the project, including:

• Under-optimal trigonometry computational time
• Redundant functionalities in the package
• Inaccuracy in our methods of usages
• Restrictive GNU license

With the above concerns, it is necessary to implement our own methods in our own calculation package and be independent from using RJM's BigDecimalMath package.

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TODO List:

• Found custom Big Decimal mathematics library under calc package.
• Implement taylor series expansion function and trig functions
• Implement a better way of doing trigonometric functions and other functions involving Taylor series.
• Angle tables for trigonometric functions (issue Trigo functions computational power-saving implementation #13)