feat: add activation on fill

lib/main.rs

@@ -48,6 +48,7 @@ impl Default for TagState {
 pub struct Config {
     pub prepopulate: u8,
     pub strict: bool,
+    pub activation_with_fill: bool,
 }
 
 impl Default for Config {
@@ -55,6 +56,7 @@ impl Default for Config {
         Self {
             prepopulate: 3,
             strict: true,
+            activation_with_fill: true,
         }
     }
 }