Added always/never/auto invert config property to country config

runtime_data/config/au.conf

@@ -33,4 +33,9 @@ ocr_language = lau
 
 ; Override for postprocess letters/numbers regex. 
 postprocess_regex_letters = [A-Z]
-postprocess_regex_numbers = [0-9]
+postprocess_regex_numbers = [0-9]
+
+
+; Whether the plate is always dark letters on light background, light letters on dark background, or both
+; value can be either always, never, or auto
+invert = auto

runtime_data/config/auwide.conf

@@ -34,4 +34,9 @@ ocr_language = lau
 
 ; Override for postprocess letters/numbers regex. 
 postprocess_regex_letters = [A-Z]
-postprocess_regex_numbers = [0-9]
+postprocess_regex_numbers = [0-9]
+
+
+; Whether the plate is always dark letters on light background, light letters on dark background, or both
+; value can be either always, never, or auto
+invert = auto

runtime_data/config/eu.conf

@@ -35,4 +35,9 @@ ocr_language = leu
 
 ; Override for postprocess letters/numbers regex. 
 postprocess_regex_letters = [A-Z]
-postprocess_regex_numbers = [0-9]
+postprocess_regex_numbers = [0-9]
+
+
+; Whether the plate is always dark letters on light background, light letters on dark background, or both
+; value can be either always, never, or auto
+invert = auto

runtime_data/config/kr.conf

@@ -35,3 +35,7 @@ ocr_language = lkr
 ; Override for postprocess letters/numbers regex. 
 postprocess_regex_letters = \pL
 postprocess_regex_numbers = \pN
+
+; Whether the plate is always dark letters on light background, light letters on dark background, or both
+; value can be either always, never, or auto
+invert = auto

runtime_data/config/us.conf

@@ -33,4 +33,8 @@ ocr_language = lus
 
 ; Override for postprocess letters/numbers regex. 
 postprocess_regex_letters = [A-Z]
-postprocess_regex_numbers = [0-9]
+postprocess_regex_numbers = [0-9]
+
+; Whether the plate is always dark letters on light background, light letters on dark background, or both
+; value can be either always, never, or auto
+invert = auto