License fix

app/Main.hs

@@ -1,3 +1,20 @@
+--  hc - haskell command line calculator using rational numbers
+--  Copyright (C) 2024 VegOwOtenks
+--
+--  This program is free software: you can redistribute it and/or modify
+--  it under the terms of the GNU Affero General Public License as published by
+--  the Free Software Foundation, either version 3 of the License, or
+--  (at your option) any later version.
+--
+--  This program is distributed in the hope that it will be useful,
+--  but WITHOUT ANY WARRANTY; without even the implied warranty of
+--  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+--  GNU Affero General Public License for more details.
+--
+--  You should have received a copy of the GNU Affero General Public License
+--  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+--
+--  contact me via vegowotenks at jossco dot de
 module Main (main) where
 
 import Lib (exprparser, evaluate, replaceVars, Expr, extractVariableDefinitions, updateVariables, parseFullString)