1. Try fix NaN floating point errors.
2. Add MoveEsauBtn and SwapFrontBtn.

add desc about j&e individual death

improve mod config saving strategy.

Fixed a bug when Jacob and Esau have exactly same position, resulting in Inf force making Esau stuck at bottom right corner of room

Now support holding Alt to move Esau only (just like Ctrl to move Jacob only). And press H key to quickly toggle the "Jacob as Front" Option without having to open Mod Config Menu.

Improved attraction algorithm

Now no longer require G key to activate alignment, but activate on shooting and distance close enough instead.