Add note/0.29.1-from-0.29.md and mention in README

Signed-off-by: Rob Browning <[email protected]>

README.md

@@ -86,6 +86,7 @@ Reasons you might want to avoid bup
 Notable changes introduced by a release
 =======================================
 
+ - <a href="note/0.29.1-from-0.29.md">Changes in 0.29.1 as compared to 0.29</a>
  - <a href="note/0.29-from-0.28.1.md">Changes in 0.29 as compared to 0.28.1</a>
  - <a href="note/0.28.1-from-0.28.md">Changes in 0.28.1 as compared to 0.28</a>
  - <a href="note/0.28-from-0.27.1.md">Changes in 0.28 as compared to 0.27.1</a>

note/0.29.1-from-0.29.md

@@ -0,0 +1,25 @@
+
+Notable changes in 0.29.1 as compared to 0.29
+=============================================
+
+May require attention
+---------------------
+
+* Running gc with a --threshold of 0 no longer runs the risk of
+  corrupting the repository.  (The default threshold is 10).
+  Previously, gc could delete a packfile after rewriting it when the
+  packfile didn't change.
+
+Build system
+------------
+
+* The `bup rm` tests should be less sensitive to variations in rsync's
+  output.
+
+* The `bup ls` tests should work on current Cygwin64.
+
+Thanks to (at least)
+====================
+
+AL, Alexander Barton, Andrea Arrighetti, Paul Kronenwetter, Rob
+Browning, Tim Riemenschneider and Tru Huynh