Revert missing keywords.

Author: webbju

UnrealAngelscriptParser/Grammar/UnrealAngelscriptLexer.g4

@@ -45,6 +45,8 @@ Directive: '#' ~ [\r\n]* -> channel (PREPROCESSOR_CHANNEL);
 
 Cast: 'cast';
 
+From: 'from';
+
 Import: 'import';
 
 Int: 'int';
@@ -59,6 +61,8 @@ Int64: 'int64';
 
 Mixin: 'mixin';
 
+Out: 'out';
+
 Property: 'property';
 
 UInt: 'uint';