Several fixes to simulation measurements
- Fixes measurements being lost when re-running simulations (and fix spice errors being printed if measurements exists when starting simulation)
- Unify default measurements format (and increase default precision from 2 to 3SD)
- Prevent a tab change happening while editing a measurement from impacting the wrong tab.
I rewrote it from my initial submission as I gained a better understanding of the simulation code.
Edited by Pila