Release 1.0.15

Related PR: #17

• Correct error handling on both regular parser and on dependency parser.
• DepParser now takes a third optional argument ignoreError: boolean, defaults to false.
  • ignoreError=false: the parser will throw a FormulaError when Error occurred.
  • ignoreError=true: the parser will return partial dependencies.
• Capture lexing & parsing error to FormulaError (#ERROR!).
• Provides detailed error in error.details if it is parsing/lexing error or other unexpected error.

  try {
       parser.parse('SUM(1))', position);
   } catch (e) {
       expect(e).to.be.instanceof(FormulaError);
       expect(e.details.errorLocation.line).to.eq(1);
       expect(e.details.errorLocation.column).to.eq(7);
       expect(e.name).to.eq('#ERROR!');
       expect(e.details.name).to.eq('NotAllInputParsedException');
   }

• Provides error location error.details.errorLocation if it is parsing or lexing error.

    errorLocation: {line:1, column: 6}