added char attribute to Text event

sandbox/will/input.py

@@ -0,0 +1,17 @@
+from textual.app import App
+from textual.widgets import TextInput
+
+
+class InputApp(App):
+
+    CSS = """
+    TextInput {
+       
+    }
+    """
+
+    def compose(self):
+        yield TextInput(initial="foo")
+
+
+app = InputApp()