Added fraction class
Added FractionTest
Added test of toString()
Start making Calculator
Start using CalculatorTest
Added execute method
Added execute test
Added reset method
Added test of reset method
Started evaluate method
Tested evaluate method created so far
Reworking following testing
Working through testing evaluate
Added method to check if Number
Tested if checkifNumber methods work
Amended Check if no method to allow for negatives
Amended to Check if can handle negatives
Amended AbsValue
Added another test on AbsValue
Made amendments to evaluate