Release 1.6.3

Version bump and changelog for the 1.6.3 sync. All eight crates ship the
same version, so the crates with no functional change this cycle say so
rather than carrying an empty section.

CHANGELOG.md

@@ -1,5 +1,17 @@
 # Changelog
 
+## [1.6.3] — 2026-08-10
+
+### Changed
+
+- **Six crates that were never used have been removed, and nothing about reading
+  a disc has changed.** They were declared as dependencies but referenced
+  nowhere, so they were compiled into every build for nothing. The rest were
+  aligned with the versions the other freemkv crates use.
+- **Two complete AES implementations were being built into the product.** Two
+  different releases of the cipher crates had been pulled in by different parts
+  of the tree and both were compiled. They are now one.
+
 ## [1.6.2] — 2026-08-08
 
 ### Fixed

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "libfreemkv"
-version = "1.6.2"
+version = "1.6.3"
 edition = "2024"
 rust-version = "1.97"
 license = "MIT"