modify CHANGELOG.md to not be a git log dump

Author: workingjubilee

CHANGELOG.md

@@ -1,17 +1,49 @@
 # Changelog
 
-All notable changes to this project will be documented in this file.
+Notable changes to this project should be documented in this file.
 
-The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
-and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
+The backtrace crate attempts to adhere to the modified [Cargo interpretation of SemVer](https://doc.rust-lang.org/cargo/reference/resolver.html#semver-compatibility).
+As a unique component of `std` it may make exceptional changes in order to support `std`.
 
 ## [Unreleased]
 
 ## [0.3.76](https://github.com/rust-lang/backtrace-rs/compare/backtrace-v0.3.75...backtrace-v0.3.76) - 2025-09-26
 
-### Other
+### Behavior
+- Fix inverted polarity of "full printing" logic in rust-lang/backtrace-rs#726:
+  Previously we used to do the opposite of what you would expect.
 
-- Expand `take_nhdr` doc-comment
-- Fix missing alignment check for ELF note header in fuchsia support
+### Platform Support
+
+- Windows: Removed hypothetical soundness risk from padding bytes in rust-lang/backtrace-rs#737
+- Fuchsia: Added appropriate alignment checks during `Elf_Nhdr` parsing in rust-lang/backtrace-rs#725
+- Cygwin: Added support in rust-lang/backtrace-rs#704
+- Windows (32-bit Arm): Restore support in rust-lang/backtrace-rs#685
+- NuttX (32-bit Arm): Use builtin `_Unwind_GetIP` in rust-lang/backtrace-rs#692
+- RTEMS: Enable libunwind in rust-lang/backtrace-rs#682
+
+### Dependencies
+
+- Update cpp_demangle to 0.5 in rust-lang/backtrace-rs#732
+- Update memchr to 2.7.6 in rust-lang/backtrace-rs#734
+- Switch from windows-targets to windows-link in rust-lang/backtrace-rs#727
+- Update ruzstd to 0.8.1 in rust-lang/backtrace-rs#718
+- Update object to 0.37 in rust-lang/backtrace-rs#718
+- Update addr2line to 0.25 in rust-lang/backtrace-rs#718
+
+### Internal
+
+CI:
+
+- Use macos-14 image for testing in rust-lang/backtrace-rs#733
 - Upgrade `ruzstd` `object`, and `addr2line` to the latest version (rust-lang/backtrace-rs#718)
 - Merge of rust-lang/backtrace-rs#705: Add `optimize(size)` to some particularly large functions
+
+Optimizations:
+
+- Remove lazily initialized Mutex in rust-lang/backtrace-rs#723
+- Add `optimize(size)` when built into std in rust-lang/backtrace-rs#705
+- Use cheaper init in `thread_local!` in rust-lang/backtrace-rs#701
+- Use `Box<[T]>` in a few places in rust-lang/backtrace-rs#702
+- Use a custom container for the cache in rust-lang/backtrace-rs#689