Resize tabs more often

Fixes #343

cmd/micro/micro.go

@@ -280,6 +280,8 @@ func main() {
 					v.matches = Match(v)
 				}
 			}
+
+			t.Resize()
 		}
 	}
 

cmd/micro/tab.go

@@ -37,6 +37,8 @@ func NewTabFromView(v *View) *Tab {
 		t.tree.height--
 	}
 
+	t.Resize()
+
 	return t
 }