cursive-core 0.1.1

API updates

• Add Dialog::into_content.
• Add Callback::from_fn_once and once1! macro to wrap a FnOnce in a FnMut.
• Add FixedLayoutView with manual placement of child views.
• Add OnLayoutView to override View::Layout
• Add Cursive::{dump, restore} to save and load the global state.
• Add NamedView::{name, set_name} to retrieve or replace the given name.
• Add LinearLayout::find_child_with_name.
• Add ScrollView::on_scroll callback.
• Add once1! macro to turn a FnOnce into FnMut.
• Implement Default for some wrapper views where the child is Default.

Bugfixes

• More hygienic wrap_impl! macro using fully-qualified paths.
• Fixed LinearLayout giving children incorrect sizes.
• More accurate "important area" for ShadowView and PaddedView.
• Fix potential panic when calling TextArea::set_cursor before its first layout phase.
• Disabled views no longer accept input if they are still in focus.