Solved fib.js
Solved sumOfDigits problem
sumOfMinAndMax problem solved
Solved sumOfDivisors problem
Solved isPrime problem
Solved primeNumberOfDivisors problem
Solved isIntPalindrome problem
Solved isNumberBalanced problem
Solved countSubstrings problem
Solved vowelsInAString problem
Solved consonantsInAString problem
Solved numberToList problem
Solved listToNumber problem
Solved isIncreasing problem
Solved isDecreasing problem
Added a solution (though slow) for primeFactorization problem
Added exports and tests for all problems
Solved forEach problem
Added higherOrder functions with tests
forEach now throwing an exception