v0.18.2: fix AACS nav-file scramble + sweep progress non-regression

decrypt::decrypt_sectors now restores chunks when decrypt_unit_full's
TS-sync verification fails, preventing 0.18.1's silent corruption of
MPLS/CLPI navigation files when DecryptingSectorSource decorates the
sweep reader. Fixes E6009 NoStreams on info iso:// for AACS-encrypted
UHDs ripped without --raw.

Disc::sweep progress takes max(snapshot.bytes_good, bytes_done) so
the user-visible counter never regresses below what the producer has
already sent.

README.md

@@ -18,7 +18,7 @@ Part of the [freemkv](https://github.com/freemkv) project.
 
 ```toml
 [dependencies]
-libfreemkv = "0.17"
+libfreemkv = "0.18"
 ```
 
 ## Quick Start