added multi line comments

Author: MESYETI

editors/micro_callisto.yaml

@@ -35,3 +35,9 @@ rules:
         end: "$"
         rules:
             - todo: "(TODO|XXX|FIXME):?"
+
+    - comment:
+        start: "\\("
+        end: "\\)"
+        rules:
+            - todo: "(TODO|XXX|FIXME):?"

examples/comments.cal

@@ -0,0 +1,10 @@
+include "cores/select.cal"
+include "std/io.cal"
+
+# This is a single line comment
+"hi\n" printstr
+
+(
+	This is a multi line comment
+)
+"hello\n" printstr

source/lexer.d

@@ -219,6 +219,12 @@ class Lexer {
 						reading = format("%d", ch);
 						break;
 					}
+					case '(': {
+						while (code[i] != ')') {
+							Next();
+						}
+						break;
+					}
 					default: {
 						reading ~= code[i];
 					}