Main (#303)

* Refresh cursor reporting on resize.

* Fix invalid size write.

This resolves:
https://github.com/ArthurSonzogni/FTXUI/issues/302

src/ftxui/component/component.cpp

@@ -64,8 +64,9 @@ void ComponentBase::Detach() {
                          [this](const Component& that) {  //
                            return this == that.get();
                          });
-  parent_->children_.erase(it);
+  ComponentBase* parent = parent_;
   parent_ = nullptr;
+  parent->children_.erase(it);  // Might delete |this|.
 }
 
 /// @brief Remove all children.