Update LICENSE

LICENSE

@@ -1,6 +1,8 @@
 zlib License
 
-Copyright (C) 2015, 2016 Lewis Van Winkle
+TINYEXPR - Tiny recursive descent parser and evaluation engine in C
+
+Copyright (C) 2015-2020 Lewis Van Winkle
 
 This software is provided 'as-is', without any express or implied
 warranty. In no event will the authors be held liable for any damages
@@ -18,3 +20,23 @@ freely, subject to the following restrictions:
    misrepresented as being the original software.
 3. This notice may not be removed or altered from any source distribution.
 
+TINYEXPR++ - Tiny recursive descent parser and evaluation engine in C++
+C++ version of the TinyExpr library.
+
+Copyright (c) 2020-2024 Blake Madden
+
+This software is provided 'as-is', without any express or implied
+warranty. In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not
+claim that you wrote the original software. If you use this software
+in a product, an acknowledgement in the product documentation would be
+appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be
+misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.