Sorting spec syntax refinement to allow one-liners like: sorting-spec: \< a-z

src/custom-sort/sorting-spec-processor.spec.ts

@@ -95,12 +95,12 @@ target-folder: Sandbox
   > created
 
 target-folder: Abcd efgh ijk
-> a-z
+\> a-z
 Plain text spec bla bla bla (matches files and folders)...
 /:files files only matching
   > a-z
 /folders folders only matching
-  < a-z
+  \< a-z
 % some-file (or folder) 
 /:files. sort....md
 % Trailer item

src/custom-sort/sorting-spec-processor.ts

@@ -148,7 +148,9 @@ const AttrLexems: { [key: string]: Attribute } = {
 	// Concise abbreviated equivalents
 	'::::': Attribute.TargetFolder,
 	'<': Attribute.OrderAsc,
-	'>': Attribute.OrderDesc
+	'\\<': Attribute.OrderAsc, // to allow single-liners in YAML
+	'>': Attribute.OrderDesc,
+	'\\>': Attribute.OrderDesc // to allow single-liners in YAML
 }
 
 const CURRENT_FOLDER_SYMBOL: string = '.'