Methods  Reworked to be private

Currently only Fraction test is in for the new Parse method.

Method is not working for cases when fraction should not parse and
should exit
Parse issue fixed

It was looking at first character and picking up operator Order change
resolved
UnaryOperators Parsing
Added full reset of states

Now resetting state of calculator after operations
Tests fixed to avoid null pointer errors
Tests fixed (again)
Parse tests complete
Evaluate Method written

Notes on next steps in the FCTest file. Not fully tested for long
strings, but it works at least for all cases that worked with Parse.