Part 1 finished
revised Part1
Start Part2 - end of first method
Finish testConstantFormula() method
finishedestParentheses() and testDeepParentheses() methods
commit again
Start using symja.jar(math expression parser) - Finished testMultiply()
finished FullExpression()
finished Part2
Start Part3
finised testThatCellChangesPropagate()
Finished testThatFormulasKnowCellsAndRecalculate()
Finished DeepPropagationWorks()
finished FormulaWorksWithManyCells()
Finished FormulaWorksWithManyCells()
Finished CircularReference
Finished Part3
finised Part3
corrected Part3
corrected part3