Add double-quotes back to log messages

Double-quotes were initially removed for aesthetic reasons. However, JMC
collapses whitespace, resulting in mangled message output. Double quotes
are converted to single quotes in compliled output.

src/logger.jmc

@@ -25,7 +25,7 @@ class logger {
 			$logger = false;
 		} else if ($logger) {
 			say "Logging is enabled. You should now see a test log message:";
-			logger(2, logger, This is a test. Logging appears to be working as expected!);
+			logger(2, logger, "This is a test. Logging appears to be working as expected!");
 		} else {
 			say "This is not a log message. There appears to be something wrong with the logger. It has not been detected as `!true` or `true`. Please investigate.";
 		}
@@ -52,23 +52,23 @@ class logger {
 	}
 
 	function test_fatal() {
-		logger(5, logger, This is a test);
+		logger(5, logger, "This is a test");
 	}
 
 	function test_error() {
-		logger(4, logger, This is a test);
+		logger(4, logger, "This is a test");
 	}
 
 	function test_warning() {
-		logger(3, logger, This is a test);
+		logger(3, logger, "This is a test");
 	}
 
 	function test_info() {
-		logger(2, logger, This is a test);
+		logger(2, logger, "This is a test");
 	}
 
 	function test_debug() {
-		logger(1, logger, This is a test);
+		logger(1, logger, "This is a test");
 	}
 
 }