Make MiniYaml inherits and removal more flexible

- Previously the Inherits syntax was only resolved when used for top-level nodes. Now it is also resolved for nested nodes as well.
- Previously the MiniYAML Merge feature supported the ability to remove nodes, but this only worked within the context of inherited nodes. Now, we allow node removal to work outside of the inheritance context.

mods/d2k/sequences/infantry.yaml

@@ -83,7 +83,6 @@ light_inf:
 		Filename: DATA.R16
 		Start: 4272
 		Offset: -30,-24
-		-Remap:
 
 trooper:
 	Defaults:
@@ -169,7 +168,6 @@ trooper:
 		Filename: DATA.R16
 		Start: 4273
 		Offset: -30,-24
-		-Remap:
 
 engineer:
 	Defaults:
@@ -244,7 +242,6 @@ engineer:
 		Filename: DATA.R16
 		Start: 4274
 		Offset: -30,-24
-		-Remap:
 
 thumper:
 	Defaults:
@@ -304,7 +301,6 @@ thumper:
 		Length: 5
 		Tick: 480
 		BlendMode: Multiply
-		-Remap:
 	die1:
 		Filename: DATA.R16
 		Frames: 1543, 1550, 1557, 1564, 1571, 1578, 1585, 1592, 1599, 1600, 1601, 1602
@@ -335,7 +331,6 @@ thumper:
 		Filename: DATA.R16
 		Start: 4275
 		Offset: -30,-24
-		-Remap:
 
 fremen:
 	Defaults:
@@ -422,7 +417,6 @@ fremen:
 		Filename: DATA.R16
 		Start: 4293
 		Offset: -30,-24
-		-Remap:
 
 saboteur:
 	Defaults:
@@ -497,7 +491,6 @@ saboteur:
 		Filename: DATA.R16
 		Start: 4295
 		Offset: -30,-24
-		-Remap:
 
 sardaukar:
 	Defaults:
@@ -586,7 +579,6 @@ sardaukar:
 		Filename: DATA.R16
 		Start: 4276
 		Offset: -30,-24
-		-Remap:
 
 grenadier:
 	Defaults:
@@ -662,7 +654,6 @@ grenadier:
 		Filename: DATA.R16
 		Start: 4297
 		Offset: -30,-24
-		-Remap:
 
 sandworm:
 	mouth: