Make ObjInt and ObjReal immutable and update number operations accordingly. Add support for class properties with get/set accessors. Rework loop parsing logic to improve clarity and consistency. Update .gitignore and TextMate grammar. Enhance Changelog and document new features.

.gitignore

@@ -17,5 +17,6 @@ xcuserdata
 /sample_texts/1.txt.gz
 /kotlin-js-store/wasm/yarn.lock
 /distributables
-/.output.txt
+.output*.txt
+debug.log
 /build.log