fold new entries into changelog

changes/bug23318

@@ -1,11 +0,0 @@
-  o Minor bugfixes (path selection):
-    - When selecting relays by bandwidth, avoid a rounding error that
-      could sometimes cause load to be imbalanced incorrectly. Previously,
-      we would always round upwards; now, we round towards the nearest
-      integer.  This had the biggest effect when a relay's weight adjustments
-      should have given it weight 0, but it got weight 1 instead.
-      Fixes bug 23318; bugfix on 0.2.4.3-alpha.
-    - When calculating the fraction of nodes that have descriptors, and all
-      all nodes in the network have zero bandwidths, count the number of nodes
-      instead.
-      Fixes bug 23318; bugfix on 0.2.4.10-alpha.

changes/bug23751

@@ -1,6 +0,0 @@
-  o Minor bugfixes (scheduler, channel):
-    - Ignore channels that have been closed while flushing cells. This can
-      happen if the write on the connection fails leading to the channel being
-      closed while in the scheduler loop. This is not a complete fix, it is a
-      bandaid until we are able to refactor those interactions. Fixes bug
-      23751; bugfix on 0.3.2.1-alpha.

changes/bug24170

@@ -1,3 +0,0 @@
-  o Minor bugfixes (path selection):
-    - Actually log the total bandwidth in compute_weighted_bandwidths().
-      Fixes bug 24170; bugfix on 0.2.4.3-alpha.