Stopped trying to handle key events when a modifier other than shift …

…is pressed. Resolves #7

src/app/component/actionhandler.rs

@@ -222,6 +222,13 @@ pub trait TextHandler {
         if !self.is_text_handling() {
             return false;
         }
+        // The only accepted modifier is shift - if pressing another set of modifiers, we won't handle it.
+        // Somewhere else should instead.
+        if !key_event.modifiers.is_empty() {
+            if key_event.modifiers != KeyModifiers::SHIFT {
+                return false;
+            }
+        }
         match key_event.code {
             KeyCode::Char(c) => {
                 self.push_text(c);