List new IDT defaults as breaking change in changelog

Author: phil-opp

Changelog.md

@@ -22,6 +22,7 @@
 - [Add structures::gdt::Entry type](https://github.com/rust-osdev/x86_64/pull/380)
 - [Allow GDT to be loaded with shared reference](https://github.com/rust-osdev/x86_64/pull/381)
 - [seal off the `PageSize` trait](https://github.com/rust-osdev/x86_64/pull/404)
+- [idt: Fixup Options structure and cleanup set_handler_fn](https://github.com/rust-osdev/x86_64/pull/226)
 
 ## New Features
 
@@ -34,10 +35,6 @@
 - [gdt: Check that MAX is in range](https://github.com/rust-osdev/x86_64/pull/365)
 - [fix `Page::from_page_table_indices`](https://github.com/rust-osdev/x86_64/pull/398)
 
-## Other improvements
-
-- [idt: Fixup Options structure and cleanup set_handler_fn](https://github.com/rust-osdev/x86_64/pull/226)
-
 # 0.14.11 – 2023-09-15
 
 ## New Features