qm.simplify() should allow for don't cares

[LarryBattle]

qm.simplify() should allow for don't cares.
It could easily be added as the third argument.

qm.simplify( inputs, minterms, dont cares );

You could change qm.simplify() to where minterms and don't cares will be treated as a boolean expression is passed as a string. If an array is passed, then assume that the input is an array of numbers.
This way if the user doesn't know the numeric values then they could use the expression and vice versa.