exchange on every key press and rare tick to save CPU churn

src/gui.rs

@@ -253,7 +253,7 @@ impl Application for Main {
                   self.configuring = None;
                },
                _ => {},
-            }
+            };
          },
          Message::EventOccurred(event) => {
             match event {
@@ -269,6 +269,7 @@ impl Application for Main {
                         self.keys_newly_down.dedup();
                      },
                   };
+                  self.exchange();
                },
                iced::event::Event::Keyboard(keyboard::Event::KeyReleased{
                   key_code,
@@ -288,9 +289,10 @@ impl Application for Main {
                      },
                      None => {},
                   };
+                  self.exchange();
                },
                _ => {},
-            }
+            };
          },
          _ => {
             self.configuring = Some(msg.clone());
@@ -306,7 +308,7 @@ impl Application for Main {
             iced::Event::Keyboard(_) => Some(Message::EventOccurred(event)),
             _ => None,
          }),
-         every(std::time::Duration::from_millis(5)).map(|_| Message::Tick),
+         every(std::time::Duration::from_millis(5000)).map(|_| Message::Tick),
       ]);
    }