Updates travis, replaces lentext

code/_compatibility/509/JSON Reader.dm

@@ -28,7 +28,7 @@ json_reader
 			src.json = json
 			. = new/list()
 			src.i = 1
-			while(src.i <= lentext(json))
+			while(src.i <= length(json))
 				var/char = get_char()
 				if(is_whitespace(char))
 					i++
@@ -46,7 +46,7 @@ json_reader
 
 		read_word()
 			var/val = ""
-			while(i <= lentext(json))
+			while(i <= length(json))
 				var/char = get_char()
 				if(is_whitespace(char) || symbols.Find(char))
 					i-- // let scanner handle this character
@@ -58,7 +58,7 @@ json_reader
 			var
 				escape 	= FALSE
 				val		= ""
-			while(++i <= lentext(json))
+			while(++i <= length(json))
 				var/char = get_char()
 				if(escape)
 					switch(char)

code/_compatibility/509/JSON Writer.dm

@@ -43,7 +43,7 @@ json_writer
 			var/static/list/json_escape = list("\\" = "\\\\", "\"" = "\\\"", "\n" = "\\n")
 			for(var/targ in json_escape)
 				var/start = 1
-				while(start <= lentext(txt))
+				while(start <= length(txt))
 					var/i = findtext(txt, targ, start)
 					if(!i)
 						break