Update author information.

AUTHORS

@@ -3,7 +3,7 @@ Ian Piumarta (2016-)
 	parsing framework
 	C grammar, C AST
 	object system design and implementation
-	metalanguage design and implementation
+	metalanguage design and implementation, features, development, etc.
 
 Mahe Tardy (2020)
 	object system implementation
@@ -11,3 +11,8 @@ Mahe Tardy (2020)
 
 Nathan Razafimanantsoa, Kumar Mahadayya (2021)
 	C AST
+
+Theo Souchon (2022-2023)
+	metalanguage features, development, tests, examples
+	grammar, object system changes for metalanguage
+	source and repository reorganisation

doc/README.md

@@ -81,7 +81,7 @@ $ man peg
 - parsing framework
 - C grammar, C AST
 - object system design and implementation
-- metalanguage design and implementation
+- metalanguage design and implementation, features, development, etc.
 
 #### Mahe Tardy (2020)
 - object system implementation