Plus42 Equations, Preview Release

[Thomas Okken]

New update:

1. In the solver called from EQN -> CALC, allow the solver to run on the very first menu key press. (Fixing the issue pointed out by Steve, above.)
2. In the equation list view, DELET would offer to delete variables belonging to functions that didn't have any. Fixed.
3. In the equation editor, the CUSTOM menu now deals properly with keys that have assignments of things other than built-in functions.
4. In Y^X with complex Y and real integer X, restrict repeated squaring to exponents between -256 and 256. This is just a preliminary fix to limit the impact of errors in numbers close to 1 blowing up. Maybe it should just be removed altogether? Numbers of the form x+0i will be handled by the real pow() anyway.