Euclid 2.0

Euclid is a calculator and so much more. One of its unique features is that it preserves numbers in their natural state, rather than forcing everything into decimal form.
For example, it remembers that 1/3 is 1/3, not 0.33333... Thus, (1/3) * 3 = 1, as it should (try this on most digital calculators and youre bound to get the incorrect 0.99999... Euclid also supports matrix operations and sets.
Enhancements:
- added r1, r2, etc. variables, for history of results
- added prefs dialog with precision remembered
- added solver for simple linear polynomials: solve(5 * x + 4)
- added nthPrime()
- added digitCount()
- added partition()
- fixed ln()
- ignore comments in scripts (lines starting with #)
- script output goes to window instead of console
- added support for sets
- added mean(), median(), sum(), contains(), minInSet(), maxInSet()
- evalInterval returns a set of the values generated
- added properFactors(), primeFactors(), numFactors()
- added support for matrices
- added menu item for running a script
- changed definition of fibonacci: fib(1) = fib(2) = 1
- output of evalInterval now goes to window
- sped up prime testing by 20x for small numbers (less than 2^63)
- prime testing now takes advantage of dual processors sped up random() for integers a bit.