Fixed unable to reach the specified max level in XPTable

Fixed the AP cost display issue in NPC combat control mod.
Added a tweak for weapon perk modifier to AIBestWeaponFix.
Minor edits to code/documents.
Updated version number.

artifacts/ddraw.ini

@@ -1,5 +1,5 @@
 ;sfall configuration settings
-;v4.1.9.1
+;v4.2
 
 [Main]
 ;Change to 1 if you want to use command line args to tell sfall to use another ini file.
@@ -272,7 +272,7 @@ Movie16=artimer4.mve
 Movie17=credits.mve
 
 ;To change the starting year, month or day, uncomment the next 3 lines
-;Both StartMonth and StartDay are 0-indexed
+;Both StartMonth and StartDay are 0-indexed (i.e. 0 is January or the first day of a month)
 ;StartYear=-1
 ;StartMonth=-1
 ;StartDay=-1
@@ -703,7 +703,7 @@ SpecialDeathGVAR=491
 ;Note that enabling this option can break the map changes in Modoc and Vault 15
 DisableSpecialMapIDs=0
 
-;Changes the base value of the duration of the knockout effect (valid range: 35..100)
+;Changes the base value of the duration of the knockout effect (valid range: 35..100; default is 35)
 ;The formula for the duration in ticks is: 10 * (value - 3 * EN)
 KnockoutTime=35
 
@@ -742,6 +742,10 @@ Enable=0
 ;-------
 DebugMode=0
 
+;Set to 1 to hide error messages in debug output when a null value is passed to the function as an object
+;Requires DebugMode to be enabled
+HideObjIsNullMsg=0
+
 ;Change to 1 to skip the compatibility mode check
 SkipCompatModeCheck=0
 
@@ -767,10 +771,6 @@ AlwaysFindScripts=0
 ;Set to 1 to force sfall to inject all hooks code into the game, even if corresponding hook scripts don't exist
 InjectAllGameHooks=0
 
-;Set to 1 to hide error messages in debug output when a null value is passed to the function as an object
-;Requires DebugMode to be enabled
-HideObjIsNullMsg=0
-
 ;Set to 1 to force critters to display combat float messages
 ;Requires AllowSoundForFloats to be enabled
 Test_ForceFloats=0