Better Trade Screen Fix
Add two modifications to the popular MOD "Better Trade Screen".
1. Fix the issue where it does not refresh correctly when there is new available trade route within the same turn.
2. The trade route duration calculation assumes the base duration is 20, now it can calculate correctly regarding different base duration (when it is being changed by some other MODs).
Optional: You can use Trade Route Smaller Minimal Duration to change the base duration and make the trade route more flexible.
UPD(2021/4/11): Better Trade Screen has fixed the Portugal Fix itself. updated for their update "Better Trade Screen".