Update version to v16.4.0.0

GameData/RealismOverhaul/RO.version

@@ -9,7 +9,7 @@
     },
     "VERSION": {
         "MAJOR": 16,
-        "MINOR": 3,
+        "MINOR": 4,
         "PATCH": 0,
         "BUILD": 0
     },

GameData/RealismOverhaul/changelog.cfg

@@ -6,14 +6,28 @@ KERBALCHANGELOG
 	website = github.com/KSP-RO/RealismOverhaul
 	VERSION
 	{
-		version = 16.3.0.0
+		version = 16.4.0.0
 		versionKSP = 1.12.3
 		CHANGE
 		{
 			change = What's Changed
-			subchange = Add control to Zenith boosters for DECQ's Energia
-			subchange = Create material-based temperature patching system
-			subchange = Soviet Lunar Lander engines
+			subchange = Ion engine overhaul
+			subchange = Hide too speculative engine upgrades from the RnD tree
+			subchange = Improve J-2T config
+			subchange = Improve intake titles/descriptions
+			subchange = Add reliability data to AJ260
+		}
+	}
+	VERSION
+	{
+		version = 16.3.0.0
+		versionKSP = 1.12.3
+		CHANGE
+		{
+			change = What's Changed
+			subchange = Add control to Zenith boosters for DECQ's Energia
+			subchange = Create material-based temperature patching system
+			subchange = Soviet Lunar Lander engines
 		}
 	}
 	VERSION

README.md

@@ -4,7 +4,7 @@
 <p align="center">
  <a href="https://nightly.link/KSP-RO/RealismOverhaul/workflows/buildAndTest/master/RealismOverhaul.zip" rel="nofollow"><img src="https://badgen.net/badge/Nightly%20build/download/blue"></a>
  <a href="https://discord.gg/V73jjNd" rel="nofollow"><img src="https://badgen.net/discord/online-members/V73jjNd?icon=discord"></a>
- <a href="https://github.com/KSP-RO/RealismOverhaul/compare/v16.3.0.0...master" rel="nofollow"><img src="https://img.shields.io/github/commits-since/KSP-RO/RealismOverhaul/latest"></a>
+ <a href="https://github.com/KSP-RO/RealismOverhaul/compare/v16.4.0.0...master" rel="nofollow"><img src="https://img.shields.io/github/commits-since/KSP-RO/RealismOverhaul/latest"></a>
 </p>
 
 # Realism Overhaul