small updates to readme and license

Author: sdingcn

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2023 Shuo Ding
+Copyright (c) 2023 sdingcn
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -43,8 +43,12 @@ See [test/](test/) for more code examples (`*.clo`).
 
 ## dependencies
 
-This project was tested on macOS.
-But it only uses standard C++ and thus should be easy to port.
+The source code of the interpreter
+is standard C++20 and thus can be compiled
+by any C++20-conforming compiler.
+
+The current `Makefile` and `run_test.py`
+need the following dependencies.
 
 + `clang++` with C++20 support
 + `make`