Rename from sapling to tricu

src/Main.hs

@@ -12,11 +12,11 @@ import Text.Megaparsec (runParser)
 
 main :: IO ()
 main = do
-  putStrLn "Welcome to the Sapling Interpreter"
+  putStrLn "Welcome to the Tricu Interpreter"
   putStrLn "You can exit at any time by typing and entering: "
   putStrLn ":_exit"
   repl library
 
-runSapling :: String -> T
-runSapling s = result (evalSapling Map.empty $ parseSapling s)
-runSaplingEnv env s = result (evalSapling env $ parseSapling s)
+runTricu :: String -> T
+runTricu s = result (evalTricu Map.empty $ parseTricu s)
+runTricuEnv env s = result (evalTricu env $ parseTricu s)