Update CHANGELOG, port new DDFGAME NO_SKILL_MENU mechanics to ZMAPINF…

…O/MAPINFO parsing

CHANGELOG.txt

@@ -32,13 +32,23 @@ New Features
 - ATTACKS.DDF: Attack special "PLAYER_ATTACK" makes attack behave as if originating from the 
   player, even if it's an indirect secondary attack i.e. the player gets his VAMPIRE health and KillBenefits.
 
+- GAMES.DDF: "NO_SKILL_MENU" boolean command added (Courtesy of akaAgar - https://github.com/edge-classic/EDGE-classic/pull/577)
+  - If true, will skip difficulty menu and start selected episode at skill 2 ("Hurt Me Plenty" for Doom)
+  - Intent is for mapsets that have a Quake-style initial skill-select level or where the author may not implement/want
+    to present skill levels
+  - Default value is false
+
+
 
 General Improvements/Changes
 --------------------
 - Windowed Mode resolution list will now dynamically populate based off of available display information instead of using presets
 - Video Options crosshair selection will not be shown when switching to/from weapons that have DDF custom crosshairs
 - Slightly re-organized the Key binding menu to accomodate the new 3rd and 4th attacks.
 - Implemented 'episode' UMAPINFO key; EDGE-Classic now fully supports the UMAPINFO spec, Revision 2.2
+  - ZMAPINFO/MAPINFO episode definitions will now be parsed as well
+- ZMAPINFO/MAPINFO will now respect the 'noskillmenu' episode definition key
+  - Leverages the new NO_SKILL_MENU DDFGAME command mentioned above
 
 Bugs fixed
 ----------

source_files/edge/p_umapinfo.cc

@@ -1220,7 +1220,11 @@ void Parse_MAPINFO(const std::string& buffer)
 				lex.MatchKeep("linecheck"); // doesn't matter, just need to update LastLine
 
 				if (key_line != lex.LastLine()) // key-only value, parse if supported and move on
+				{
+					if (epi::case_cmp(key, "noskillmenu") == 0)
+						new_epi->no_skill_menu = true;
 					continue;
+				}
 
 				lex.Match("="); // optional
 
@@ -1707,7 +1711,11 @@ void Parse_ZMAPINFO(const std::string& buffer)
 				lex.MatchKeep("linecheck"); // doesn't matter, just need to update LastLine
 
 				if (key_line != lex.LastLine()) // key-only value, parse if supported and move on
+				{
+					if (epi::case_cmp(key, "noskillmenu") == 0)
+						new_epi->no_skill_menu = true;
 					continue;
+				}
 
 				lex.Match("="); // optional