Update changelog

Author: douweschulte

README.md

@@ -2,7 +2,7 @@
 ![Compile & Test](https://github.com/douweschulte/pdbtbx/actions/workflows/rust.yml/badge.svg)
 [![pdbtbx documentation](https://docs.rs/pdbtbx/badge.svg)](https://docs.rs/pdbtbx)
 [![Crates.io](https://img.shields.io/crates/v/pdbtbx.svg)](https://crates.io/crates/pdbtbx)
-![rustc 1.64+](https://img.shields.io/badge/msrv-rustc_1.64+-red.svg)
+![rustc 1.67+](https://img.shields.io/badge/msrv-rustc_1.67+-red.svg)
 
 ## Description
 This is a Rust library helping to parse, edit and save crystallographic PDB/mmCIF files. It can read most atomic data from PDB/mmCIF files. Its high level goal is to create a stable, efficient and easy to use interface to PDB/mmCIF files written in pure Rust. For detailed documentation check out the official API [docs](https://docs.rs/pdbtbx/0.12.0/pdbtbx/).

changelog.md

@@ -8,6 +8,8 @@ All versions are properly annotated on [github](https://github.com/douweschulte/
 * Added bond inference (Thanks to David-OConnor)
 * Updated mismatched symmetry group error to warning (Thanks to David-OConnor)
 * Removed dependency doc_cfg to prevent double dependencies in the tree
+* Moved the `PDBError` into a separate crate (shared with another project: rusteomics/mzcore).
+  This changes quite a lot of the exposed API but should be relatively easy to adapt to.
 
 ### v0.12.0
 * Added unified file read logic, see `ReadOptions` (Thanks to y1zhou and OWisset)