[Ohrrpgce] SVN: teeemcee/11871 Fix various Foemap Stats and Enemy Usage edgecase bugs

[subversion at HamsterRepublic.com]

teeemcee
2020-06-23 08:10:31 -0700 (Tue, 23 Jun 2020)
374
Fix various Foemap Stats and Enemy Usage edgecase bugs

-Foemap stats ignored enemy 0 for some calculations
-Fixed some harmless divide-by-zeros that caused "-nan" to appear
-Fix tallying XP and gold rewards of a formset with zero frequency
-In Enemy Usage, warn when a formset has zero frequency
-Fix rounding error in calculating average formset XP rewards in Foemap Stats
---
U   wip/enemyedit.bas
U   wip/whatsnew.txt