Release v0.23

Author: keirf

RELEASE_NOTES

@@ -3,6 +3,16 @@
 ** Keir Fraser <keir.xen@gmail.com>
 ************************************
 
+** v0.23 - 13 January 2021
+ - Support new Greaseweazle model: F7 Slim
+ - Read/write/verify 1.44M IMG image files
+ - Read/write Kryoflux stream files
+ - Optimisations:
+   - Rewrite read/verify conversion routines in C
+   - Fast Amiga track reads (now read an Amiga disk in approx 45 seconds)
+ - Shrink the Windows distribution zip file
+ - GW: New track-selection syntax ("--track="). See the wiki.
+
 ** v0.22 - 27 November 2020
  - Support read and write of Amiga ADF image files
  - Increase /STEP pulse width to 15us (fix 5.25" drive seek for Arno Olaf)