Can now use -g to set a goal.

watcher.cpp

@@ -2,6 +2,7 @@
 #include <filesystem>
 #include <algorithm>
 #include <cassert>
+#include <fmt/core.h>
 
 using std::string;
 namespace fs = std::filesystem;
@@ -29,6 +30,7 @@ void UpdateListener::handleFileAction(efsw::WatchID watchid,
   assert(rc == 0 && "libgit2 says it can't check the ignored file");
 
   if(!ignored) {
+    fmt::println("~~~ CHANGED: {}", the_path.string());
     changes = changes || !ignored;
   }
 }